Most of these dudes are too afraid to even step to a woman and say "hello", let alone actually interacting with women on a consistent basis.
I understand 100% what OP is saying because I used to be one of those type of guys. I would approach females KNOWING that she would be nothing more than another notch on my belt.
I was pretty good at being deceptive and playing the "good guy" role. I was "different" than most men to these women but all along my intention was to smash and dash. There was no "signs" that I was a dog. I was basically playing the role to get what I wanted even tho I knew that that was ALL I wanted.
It got tiresome and my consciousness took over that what I was doing was fukked up so I'm out the dishonesty game now.
I have a daughter now and think to myself sometimes that I hope she never runs across a guy like the old me.