While the que times are bad sometimes, it is fun being a DPS. Its fun not having to worry about a lot of the mechanics to healing and tanking that make those stressful if you don't do it perfectly. Its fun that if you make a mistake in your rotation its very likely no one is going to notice it and it doesn't cause any lasting damage (unless you're on Titan HM Heart Phase, then you might be in trouble :P). Its fun just seeing big numbers.

There are moments when you need to know what you're doing and need to take everything seriously but mostly being a DPS is just fun.