Since your main goal (it sounds like) is to have more people abs friends around you to do things with, it sounds to me like you need to weigh out if there is enough promise from these friends that you have back in Upstate New York that they're going to be there for you. There's no guarantees but maybe something you need to talk with them about. You might need to think about the services you might need for yourself as well. Like Medical, transportation and the cost difference between being in New York versus Colorado. I don't know I'm just guessing here. I think those are things that I would be very concerned about. If I sat here longer, I could probably think of some more things possibly. I think it's good to make a list. A pros and cons list of going versus not going and staying where you are. I can certainly understand with not having very many people/friends to do things with. It sounds from what you say that it can get fairly lonely? I would also seriously think about what your life would be like back in New York if these friends did not give you as much attention or company that you're looking for.
Weather differences might be important. And maybe the question of whether or not to move might effect your income possibly?

At our age, friends and people company is essential. Upstate NY sounds good choice for you.

If I had a choice to live by ocean or inland I would choose ocean. And if you have friends there, I would move!

It is certainly possible to move back to upstate New York via the Amtrak train service or Greyhound bus service. Perhaps you could discuss this further with trusted friends/family members.

Do not wait for invitations. Invite them! Reach out. Not only is relocating a hassle, but New York is not a very nice place to live compared to Colorado.

It might be a good opportunity.. it's up to you .. did your friend ever clear out her bedbugs tho?

id go for it. friends are important. you dont sound happy where you are now.

move back to ny, i bet youllhave a better time,

Have to ask yourself if NY crazy energy policies will negatively affect your pocketbook. Might want to consider that

Do what will make you happiest.

Do as your heart leads you.

you need a warm climate where there is no snow\ice to deal with