i don't know a thing

i don't know anything! i have ideas but they're just ideas of other peoples ideas. also? what am i supposed to do? I've mentioned before how i don't see my life progressing much farther past finishing undergrad and then going back for masters and such, but after? i don't see myself getting married. i know i want to be cremated. but what comes between school and death? what will i do? i don't necessarily want kids. it seems so sad to be alone forever.