Not everyone out there is a mutant. Laura - she's a literal walking corpse who is decomposing when powers are turned on. Jessica - she's a vampire who has to drink blood to survive and sleep during the day. And who knows who might show up tomorrow who may not want to deal with their abilities?
If you don't talk to them, you won't know. Besides, who says anyone can just decide things for people? I thought the whole point of all of this was democracy and voting. What gives you the right to make this decision on the behalf of strangers?