The only reasons you gave are reasons not to have kids, which makes me think that is what you want...

If you really want one, you'll find a way to make it work. There are unplanned pregnancies every day and women find a way to handle it when the dad bails. It's not always an ideal situation, but if you have the motivation, it'll work out. If you think you're going to neglect or resent the kid, then no.