Is roasting food healthier/better then boiling it?
Personally i cant stand most boiled food.
Is it unhealthy or "tasteless" to roast most things?
There is no general answer to that because different foods are different. Also, "healthier" is ill-defined. On average, boiling is going to be "healthier" because the maximum temperatures are lower.
What's "tasteless" is the way you are vastly overgeneralizing. And you speak as if boiling and roasting are the only two ways of cooking stuff.
But yes, speaking in vague generalities, boiling is a stupid way to cook most things. You should probably either be steaming them so all the flavor and vitamins don't get leeched out into the water, or stick them in the oven so they get crispy.