I think you really do care for this guy.You say you want to spent the rest of your life with him.You dont say this about someone who you dont hold in high regard.

You also seem too think imo that your not good enough for him, with statements like "he deserves to be adored etc".Well if he deserves it and you see that then thats all that matters.Its obvious when you start talking about marriage and kids things might get a bit scary and make you doubt it, and things start crossing your mind like "is he the one" "can i see myself with him forever".This is natural though because these things are a massive decision in life and any normal person would think the same.

Just take life as it comes, u seem to have a great guy and from wht you wrote i really do think you love him, dont push him away because these things are crossing your mind.Speak too him about how you feel.You dont want too rush into breaking up or something and regret it, because that will cause you more pain that what your feeling at the moment.