Babies are a huge time investment. They need to be fed every three hours around the clock, they need pediatrician appointments, shots, they get sick, etc. You got to be ready. You will feed and clothe them whether you like it or not till they can pay for themselves. You will need to discipline them and teach them how to be good people. If you are not ready for all of that , you should not have been having unprotected sex, that is irresponsible. You can't expect mom to raise junior either.
Abortion is also a very personal choice. At 15 weeks, when a fetus is aborted, it loks like a little human being, not a sea horse. Sometimes at my job a woman's baby dies inside her prematurely and she spontaneously aborts it. We dress it, let her hold it, take pictures and make a little birth and death certificate. When a person chooses to have an abortion, she is put to sleep, she never has to see the fetus or baby, it is sent directly to the lab.
Adoption is hard too, because you carry the baby for 9 months, and then you give it up. Hopefully people who prayed for a baby will adopt it and love it -and usually they do because they wanted this baby badly.
All of this is personal opinion and religon aside. Some religons will excommunicate you or tell you that you are damned for eternity. So will some people. You need not listen to them, you have to answer to your soul, to your God, etc.If you are going to feel guilty or depressed or damned after an abortion, this is not the right choice. If you see no other option, than it is for you. We always have options.