Man, people who buy a bike and never work on it are like princesses. Every time it feels 'clunky' or it 'makes a weird sounds' they whine and cry and dismiss the bike as trash and waste money and resources on another new bike.
Are you a princess?! Do you wear a pink frilly dress?! Do you like day dreaming about little ponies?!
No?
You want to be cool?
You know who's cool? People who do their own work! All throughout history the cool group were the group who did their own wrenching. Blacksmiths, factory workers, greasers, engineers, mythbuster dudes, and so on.
So just remember: If you want to be a princess, buy a complete bike. If you want to be a badass mofo, wrench your own bike.