PokemonMasterIRL
Smash Master
First off, I love Sliq posts.
So much truth, had to quote it for the truth. ;}Anyone that mains a high tier almost always becomes complacent with their playstyle, and when you shut down their "broken" aspect, they fall apart because they use their character as a crutch to success as opposed to a tool.
Also, every character is tournament viable, it's just a matter of whether or not you want to practice more than everyone else. You can win with any character if your talent level is far above your opponent, it's just harder and takes a lot of work.
Furthermore, about 95% of the people who enter a tournament don't win it, so saying that not maining MK is "throwing your money away," entering the tournament itself is pretty much throwing your money away. You enter a tournament to compete with something on the line so it is more intense. The goal is ultimately to win, but it only happens for a rare few.
Also, if you play a generally underused character, you have a small element of surprise with unfamiliar tactics.