I'm far from answering for ALL men here. However, when I go through profiles, I look at them, scrutinise the interests and the lifestyle mentioned. If I find anything of interest, i.e. common interests with my own, I write and say hello. If there's nothing or the personal preferences are different, I move on (without leaving a message).
So, in short, I can only guess that your profile either lacks information or the guys who look at your profile have different preferences, hobbies, priorities or interests.