your friends are all silly. of course you can fly. you cannot lift yourself up directly of course (that never happens)
you lift up yourself by riding on the object you lift up, cool huh?
for example your standing on a skateboard, then, you levitate the skateboard. in x-men 2 you can see the good example of this theory. when magneto is going out of plastic jail, he's standing on a metalic thing that he's moving. in x-men 3, magneto also makes a bunch of people fly, by simply lifting up the golden gate. but of course, magneto can naturally fly because he has the talent. jean grey is a different case. she also has the talent to fly (that's the other thing from her telekinetic power)
Yoda couldnt fly? that's because he never tried to use my technique.
you're right. telekinetic is probably the best superpower ever. why?
1. you be offensive (throwing people, making yourself untouchable, throwing something at people like sword or somethin)
2. you can be defensive (making telekinetic shield like what jean grey did in x-men 2 when water strikes, building telekinetic shield from bulets coming through you (and deflect them onto you enemies) like in x-men 3 when she is about to be shot by stupid and idiot soldiers in the last scene.
3.you can be a lazy bum (making things come to you instead of the other way around)
4.you can fly (using my cool technique)
5.you can become invinsible (combining all techniques of telekinesis)