And you only get to play the startup card so long. Tesla is indeed a 16 year old company whose production struggles look even more troubling considering their growth isn't what anyone would really consider hockey stick, and their competitors have none of their scaling issues.
Add in a leader that has shown some stability issues, and its tough to make a case for it.
Personally, I root hard for Tesla the company, want to see them succeed, and after recently buying a house with a parking spot, may buy a Tesla as my next car, but I am not buying shares anytime soon.