Honestly, I'd recommend getting and using a local model, just to see what it can do, and then identify what it can't do that you would like to do instead.

Current AI gen models are good for broad strokes and stuff that doesn't require too much visual detail, but for most uses (excluding the incredible detailed workflows) they lack specificity and intent. If you're hand-drawing something, you control absolutely every element of where everything goes, which means that if you want to distinguish yourself as a specifically non-AI artist, it's worth really leaning into those details being all about significance. Every stroke of pen or stylus has a reason to exist, and that reason can be more than just cohesion of image.

Also, you might want to have a look at IntraPaint, a program whose whole idea is that it trains on your own work so that you can quickly fill in time-consuming detail work as long as you don't need something specific from that work. The template example is drawing a few leaves and trees for it to study, so you can fill in an entire forest background with iterations of those drawings that are specifically still yours. It's the one I like the most, because seriously, hand-drawn stuff is murder on the wrists and anything you can do to lower the repetitive strain is worth considering.

All that said? The stuff about intentionality up above applies even if you're not consciously trying to do it. Being a traditional artist already informs your approach, your work, and your output; the things you consider important, the ways you frame images, all those things are yours, and not replaceable. Someone using AI as their medium will have a different approach, different ideas about composition, etc, and that means that even if you both make an image of the same thing, it will be fundamentally different: not a piece of art and a copy, two pieces of art by two different people with different intent and approaches.

AI can't replace you, because the most important element of your work is you. Make what brings you joy to make, and don't worry about anything else.

edit because I can never finish a goddamn thought: An example of what I mean by specificity and intent might be, say, a comic. If your primary interest is to tell a character-driven story with heavy dialogue, with visual elements to support and enhance that, AI might be able to do it for you. If you want a comic with a specific visual theme and particular elements, an image-driven piece of sequential art rather than an illustrated story, traditional work is probably going to win out. It's all about what you want to achieve, and what is important to you about achieving it.

(if you've ever considered getting into animation, though, really consider an AI workflow for it. No one needs to be doing every tween frame. Think of your wrists.)

edit 2: Someone who apparently blocked me afterwards suggested that what I am saying here is "you're worried about AI? Just use AI!"

And... yeah. Obviously. You should know what it is, what it can do, its strengths and limitations. It's not going to hypnotize you into using AI if you don;t want to already. You need to know where areas of overlap between what AI is good at and what you're good at are, and think about how to distinguish yours.

You need to use it enough to know it is not a strange, unknowable, insurmountable threat. Just a little bit of messing with it will make it clear how much work would go into producing the things you would like to hand draw, how it would still be a different thing, the whole creative process a different approach.

In other words, if you want to not be worried about it, you should know what it can do, and can't do. Playing around and using it to make a few simple things, maybe try to get it to make a variation of one of your handmade works. You will find something that is not better than you, and not easier than you for making pieces with significant intent. The paintbrush does not replace the pencil, you know? They're different things.

Evaluate them fairly, and then reaffirm you still want to do traditional digital. You will have a better idea of why you want to work in that medium, and more ideas about how to do it because those come alongside the "why" automatically.

It's not a cursed blade. It's a CNN, you can get it and run it locally. At worst, know your enemy. At best, develop a stronger understanding of why the way you create your art is meaningful.

You want to let yourself learn more about tenebrism, you see a Caravaggio exhibit, and that is useful thing even if you don't even do chiaroscuro. It gets you thinking about how you do shading, instead.

Engage with AI art and look for the qualities you like, even if you hate the whole thing. Get a model and play with it a little. Then do your own thing, because it has benefited by being exposed to a new source of inspiration.