I would be extremely skeptical. I used to be a stupid, naive kid, who believed that 'forever and always' really will be forever and always, I was too blinded by love. He ended up hurting me really bad, he fucked up big time, and obviously we broke up. He was a douchebag and playing me all along. Since then I refuse to be so naive again, I'm not gonna trust every sweet and pretty word a guy will say to me. Besides, shit happens, how can he know that it'll really be forever? There's no guarantee.
No that is a unrealistic statement I would believe the sincerity of their statement but not the statement itself, as life is incredibly unpredictable you could make that statement then run on hard times, lose your job, get in an accident etc, etc. Also I would never say it personally, the most realistic thing to say would be that you would also try and be there for them and do your best to take care of them, as that is something you can guarantee.
For most people I guess it depends on how long you've been dating, how strong your bond is, etc. For me, forever is a hella long time and I don't think I would believe him no matter the circumstance. Then again, I'm just a very realistic and sensible person.
No. Nobody can "take care of other people forever". It sure sounds romantic and i would give him credit for that. But i don't want or need a man to " take care" of me. A guy who knows me should know that already. I want a man to accompany me through life. I'll do the talking care myself