The good thing about dating multiple women is that it keeps you from getting the dreaded "oneitis" which I think most of us agree is to be avoided at all costs. It also really accelerates your skill and comfort levels with women. I mean, you can either date one girl for a few weeks, then have a few weeks looking for the next one, etc, or you can be seeing multiple girls the same week and learning from every experience with each of them. Its a real force multiplier compared to dating one girl at a time. I'm not advocating a lifetime of plate spinning, as it can be exhausting, but it certainly has its advantages if you can pull it off for a while.