I'm a serial dater and womaniser
Why do you feel the need to treat women like that?
It's fun, it feels great to know someone else interests you in any case.
Objectifying woman in such a way is bad. You should not be dating multiple people, unless all people involved are ok with the situation.
I don't really see the problem with it though
How would you feel if the women treated you in such a manner? It would bother you as well I am sure. Show more empathy and your relationships will have more fulfillment.