It can be one of your life purposes, but should never be THE ONE (only) purpose.
I'm still a beginner and I recently ran into a kind of "crisis" based around this.
My passion is music, I'm extremely dedicated & have some cool achievements to show for it. But during the last year, approaching women was so damn fun that I decided that "getting better with women" was gonna be my new passion. I took a break from music and dropped it.
I embraced the "pick up artist" as my own identity. That was OK when things were going well with women. But when things got tough, like when I went through a major dry-spell and was faced with some particularly harsh rejections, it hurt 100-fold. Because I'd embraced the "pick-up artist" as my primary identity/passion, these rejections hurt me on a very deep, emotional, personal level. It also added more pressure on me when dealing with women. Neither of these things helped at all!
After that "crisis", I picked up my guitar and started cranking out riffs for the first time in a while, and it all came back to me: who I really am! Something MINE! Something that doesn't depend on the whims & chances & lives of random women. Something I'm proud of no matter what, something I control 100%. I realized I don't need women to be happy.
Now I balance music with pick-up and my results have risen exponentially.
You gotta have something of your own other than women. I've even heard girls saying that about guys. Most women you meet won't think it's cool that you have no passion (and you can't really talk to them about your passion for picking up girls). It'll also help you relate to women better, because most of them probably have a passion of their own.
) BUT I'm not gonna make it THE purpose of my life. I'm still trying to figure out what that is still.... 
