That's a pretty open-ended question. Do you like tanks? Tanks are cool. Yes, you like tanks. Ergo, you can be cool. You can also be the baddest SOB on the battlefield. That's also cool. Firing the 120mm about 6" to your left shoulder is awesomely cool, so there's that too. So, yes, it's cool. Are you lazy? Because road marches are much easier on a tank. Why carry a weapon when your weapon will carry you?
There's also a lot of mud, tank bites (Where you damage yourself doing maintenance), and everything on the bloody tank is heavy as hell. You overheat in the summer due to lack of air conditioning, and you freeze your ass in the Winter because the heater only works April through October.
Seriously, though, what are you reclassing from? Why are you considering it?