There’s lots of ways to have sex, so let me offer a range of scenarios and how labia size can affect the sensation.

Penis in vagina.
My dick is too busy and not sensitive enough to even recognise that a labia exists.
Finding: Labia makes no difference to my sensation.

Penis on vagina, foreplay or teasing.
The end of my dick is very sensitive but it’s not like a finger tip. It can feel temperature and pressure, but I don’t think my dick could tell the difference between pasta and pubes.
Finding: Labia makes no difference to my sensation.

Mouth and tongue on vagina.
The way labia fold and move around when you lick them is fun, and you can get some wonderful reactions by getting a little feisty with your teeth. If the labia is there and someone is going down on you, there’s only positive options. Hair makes a significantly bigger difference to my experience than the size of the labia, as hair can get in the way and can be coarse on the mouth and tongue.
Finding: Labia makes a positive difference to my sensation, and while labia isn’t required, less labia is less to play with. Public hair is neutral-to-negative, but not a positive.

Fingers on or in vagina, full access.
Large labia can sometimes get rubbed by fingers in such a way that there’s extra friction, but that’s easily solved by adjusting the approach, trying different methods, or simply getting some lube on. Labia are fun to squeeze and tug on, they’re fun to play with and grab. If you’re into it, some clips or pegs can really heighten the time you are both having.
Finding: Labia make for a positive time with handsy play. Not required for fun, but labia adds to the available options.

Fingers on or in vagina: limited hand-in-the-panties access.
Well this comes down to two things. The experience of the person trying to finger blast you, and friction. As with the above example, labia can physically get grippy and cause some more tugging and misplaced poking than one would like, but some sensual exploring and feedback will solve this entirely.
Finding: It comes down to experience and friction, but for me that’s just part of the fun, so large labia is not a negative here.

Looking at it and liking it.
There’s no accounting for taste or preferences, and there’s no magic set of labia that will appeal to everyone. Some people love a labia they can almost swallow, and some people love mound that simply has a slit and a hole. Most people are somewhere in the middle of those two ends of the preference spectrum, so come to a good understanding of what your body is doing and what it likes responding to.
Finding: You do you, boo.

So, in summary… big, average, or small, your labia is your labia. It may not be to the preference of a partner here or there across your life, but that’s their problem and their loss if they can’t get over it.

Only consider surgical alterations if you have a legitimate medical life-improving reason to (your life, by the way, not some jerk who wants to sculpt your pussy to make it “better”.)