My initial inspiration was Kevin Hays. I go to the same high school he went to, and although he graduated the year before I got there, he is remembered there. He was on some list of "alums with interesting accomplishments" that I ran into during freshman year. I didn't think much of it at the time. In junior year, I decided on a whim to go find a video of his 6x6 single world record, and was very impressed. So I went and found my old crappy (unsolved) Rubik's brand that had sat on the floor of my room for years and started messing around. A year later, here I am. I still run into people at school who knew Kevin when he was there, or have him as a swim coach.
Fun fact: during my freshman year, Kevin's sister Stephanie and I were the only two tuba players in band. She was better than me at it. I think she thought I was annoying, which I probably was at the time.

A couple years later, she saw me solving a 5x5 and said "yeah! Solve that cube!" and then said casually "my brother has one of those." Nothing about his records, or anything. I don't think she had any idea I knew who Kevin was, or that he inspires me. Kind of funny.
Other cubers that inspire me are most of the world record holders, particularly Feliks and Sebastian, and many of the cubers who are active on this forum, like bindedsa and Kennan. The top blindsolvers, particularly Maskow, also are inspiring. But I think the biggest inspiration comes from the puzzle theorists. Christopher Mowla and Stefan both inspire me a lot.
I think the one person in this community who I respect/look up to/am inspired by most is Chris Hardwick. He's great at BLD and a great theorist, but that's not what really makes him inspirational. He's just great to everyone in this community. He frequently explains blind solving concepts or math concepts to inexperienced members, which plenty of people on here don't have the patience to do, but even the posts that aren't actively helping someone else have a friendliness to them that most people don't have, in real life or on this forum. Probably sounds cheesy, but I really do find that inspiring.