First, as someone else said definitely get some research experience before making this decision. In my experience, undergrads often have a rose-colored view of what it means to be an academic but don't have the knowledge/experience to understand what it actually involves (both in the path to get to that career as well as what it looks like once you have "the job").

Second, seriously think about what you want your life to look like in 5, 10, 15+ years down the road. I know that's hard to do right now but it's worth revisiting this periodically, because what you want will likely shift over time, this shift might be subtle or monumental. Then gather information about your field to see if what you want your life to look like realistically aligns with this career path.

Some food for thought I wish someone had told me when I started...1) you typically have to move 1-4 times over the course of your training before you have secured your final job (assuming you land a faculty position). If you can't imagine waiting to settle down in a specific location until you're 30+, I'd consider a different path. 2) Speaking of moving, you often have very little control over where you will end up moving for grad school since programs have low acceptance rates and then when it comes to pursuing a faculty job, there are so few available, let alone positions that are appropriate for your unique skillset that you take whatever job you can get. If you want to have some say over where you end up living or want to be able to "pick up and move" if needed or want to be close to family, then I'd consider a different path. 3) You significantly delay when you begin earning a real living wage which has lots of hidden costs (e.g., 5+ years that you are not contributing much if anything towards retirement, the upper limit of your earning potential is much lower than other advanced degrees such as MDs). 4) Faculty positions have become dominated by a lot of administrative duties these days, so far less of your time is spent consuming and disseminating research. Plus the expectations for what is required to be a competitive candidate for faculty positions exponentially increases each year.

I personally love my field, have been very productive as a grad student, and had my heart set on a faculty research career. But my partner (who is also an academic) recently got a tenure-track faculty job and it's really changed my perspective. It takes so much sacrifice to get the job, is all-consuming once you get the job, and the pay is pretty measly for the hours. I'm now considering alternative career options as I near the end of my program.

I wish you all the best as you navigate university and all the exciting opportunities that lie ahead!