Why did he think that having a big dong would be enough in bed?

The guy I was dating did nothing but pound away and was shocked when I dumped him because he thought being good looking and having a big dong was enough??? Plus he's 35 so you think he would know better! Why did he think this way? He didn't even touch me in bed when I said I liked it! He just did his thing and left. Do lots of guys act this way?