Is it time to say goodbye?

I’m a 50 yr old woman dating a 61yr old man and we have been together for 4 yrs. We do not live together. We enjoy traveling and generally hanging out. He wants me to move in and get married which I told him I was not ready for. Yeah, I know what your thinking. You figure since we have been dating for 4 yrs and at our age I should have some idea where this relationsip is going. The problem is we differ at what I feel is a very important area. The physical aspect. I’m a very physical person. I love to touch, hug, kiss, and snuggle and yes I love sex. He on the other hand doesn’t. He finds it annoying when I try to touch him ie: stroke or caress his arm, nape, etc. he likes to snuggle, but only when he initates it, otherwise he pulls away. His kisses are of very short duration, but I take into account that he has asthma and he has trouble catching his breath at times. Sex isn’t possible due to his ED (erectile dysfunction). He has tried a couple of the meds with no success and he has given up in trying. I have tried talking to him about my needs, but it hasn’t gotten me anywhere. We have a few financial obligations together that will end by Sept. and I’m seriously considering ending it then. Is this relationship worth trying to save or should I just cut my losses?