It's a hard fact of life that men can and do walk away from their own offspring without a second glance with depressing regularity. They can choose to do this at any time between that little blue dot and the child'd graduation from Uni. There are no real societa sanctions placed upon men who choose to abdicate all responsibility for their children, no matter how much we women might bitterly complain at times.
It's not fair or right but it is what happens every day in the real world, and we need to accept that harsh reality and deal.
For this reason I very strongly feel that NO woman should ever be without sufficient skills and education to "go it alone" prior to any conception, even when the child is carefully planned by both parties.
If we want to society to change, we need to carefully evaluate how we raise our own sons and indoctrinate them with the following mantra from the cradle "you play you pay"; while all the while recognsing that in doing so we are trying to overcome hundreds of years of social conditioning that says it's OK for a man to do a runner in response to an unplanned pregnancy or relationship breakdown.
If that godawful Ched Evans case hasn't yet shaken a lot of women out of their complacency as to how women are STILL treated as disposable when it suits men, and how far we have still to go in terms of societal attitudes towards male sexual responsibility then nothing will.
Only If YOU want the child, & are prepared to go it alone should you continue the pregnancy. However do remember that you can only take total responsibility for your OWN actions as a parent in future, your partner will have to account to noone but himself for his choices. Also be prepared to accept that you may be bitterly disapointed with any choices he makes.
Don't wish for the moon (ie hope that he'll suddenly want to be the poster child for fatherhood & stay wiith you)start planning to raise this child solo in ALL aspects. (Don't rely on the state or CSA to force him to aid you in raising the child either!). It's always better to be pleasantly suprised than bitterly disapointed.