Is it stupid of me wanting to keep his baby? (sorry its so long)?

so my ex boyfriend and i, after breaking up decided to stay friends. i had taken a pregnancy test while we were still friends and it came out negative. while we were still friends, i was always getting mad at him over the littlest things like every other week. at the end of february, after our last fight, he had told me not talk/text him cause he won't read or reply back. i did text him back apologizing for arguing but that was the only text i sent. on march 1st, however, he had completely removed me from his internet social life without telling me anything about not wanting to be friends anymore and just the day before he did that i wrote him a letter and sent through the mail that same day telling him why i had decided to end our friendship. to say the least, i was devastated after he ended our friendship like that, completely heartbroken. in april, during easter time, i had gone home and i when i got there i started to feel extremely ill and was throwing up everything. we went to the doctor and they did an ultrasound cause they thought i was pregnant and the ultrasound proved that i was 5 months pregnant. my ex boyfriend is the only person i've had sex with so i know the baby's his. i wrote him a short little letter telling him that i found out i was for sure pregnant and that he was the father. i gave him the letter the same week before we left for summer vacation and not once did he try to approach me to talk about it. i have looked into adoption but i'm two months away and i'm thinking of keeping my baby. when i tell people this they think i'm a stupid little b**** for keeping the baby of the guy who hurt me and who still care about and love. they also think that i'm using the baby to get back with him which i'm not. i don't want to get back together if its cause of the baby cause i've seen teen mom and i think its the wrong reason to be with someone. if we were toget back together i would want it to be cause both of us want to, and neither one of us want to even be friends let alone get back together. i'm not gonna make him do anything he doesn't want to. besides, a week after he ended our friendship he started dating his best friend since 8th grade so i know he's moved on. if anything, i would like him to be in the baby's life cause i grew up without my dad and i hated it. i also don't want the baby to grow up hating her biological father cause he didn't want to be a part of her life. am i stupid for feeling/still wanting all this? again i apologize its so long