sorry to say, leave!
like you said, he only have good looks but smoke marijuana.....don't use condom (selfish act)...no future plans...
If he is serious, then he won't do things that you don't like.
If you wanna wait, for how long?
are you really gonna give us stranger dangers' power over your relationship? and not even explain a little bit about your unsureness? lol
no offense, but my first impression is that he doesn't seem like the kind of person who would be able to support the both of you on your own. let alone having a baby.
well, the weed will not change him.
give him the option to change and make him prove it or you're leaving him