If you don't feel shame don't tell me you feel pride. Excuses, excuses. You already say you say things you know you won't mean or keep your promises to women in order to get them in bed. That's what is fake. You know this and yet you do it, you are being the fake you.
"I will say foolish things sincerely if I'm high on them. Later I don't feel the same way and I feel sorry for perhaps giving them false hopes about something more permanent."
Are you really sincere when you aren't sincere. You're giving them false hope, aren't you? It's ok to be different with different people, but is it ok for you to be fake. Those are not mutually inclusive.
I don't really believe in real long term satisfaction, but what satisfaction you can attain without harming others or without making yourself dislike what you have done is reason enough to do something true to yourself. Satisfaction is fleeting, and pain is fleeting, but what you remember of the experience, that might haunt you.
Sure, it's described that certain people like a chase. But you thinking they're too easy is you looking down on them, when you know you've given them false hope. You thought they would know better, and you damaged them. Hey I know it doesn't sit right in your head what you have done, that's why you make this post. Now you just have to figure out what to do about it.
It's not really my place to judge, you know what you have done is wrong, it doesn't mean it has to continue, it doesn't mean you have to stop chasing women. You can figure something out that will let you not damage others.