George this is a very interesting topic you brought up.
The most I think overall if I had to choose would be the people for me personally. I've met so many great people here and I'll never forget what I've learned from them. Everyone here inspires each other and helps them out. That's why FIRST is amazing.
But of course every other aspect with the building of the robot, competition, traveling and all.. bring it all together and make it better. We have a goal, the spirit to fight, and the help to guide us and of course all the fun times in between. I can understand why some will say the robot b/c it does bring people together especially the team. It is what they all though up of and slaved away at. But you can't talk one element away. It just wouldn't be FIRST.
So it's hard to say which is the most inspiration, if i didn't have to choose one aspect I would have to say it all. FIRST overall with it's total package and experience is just amazing. I'm glad I found this crazy amazing world of FIRST. It's full of talent, fun and inspiration.
well that was my 2 cents in... I'm glad though FIRST is an inspiration for all of us. It can bring the very best in all of us.