You won't be any more or less lonely than you are at home. There are always people to talk to at campgrounds and there are the women on here that live all across the country and love to set up get togethers with whomever is passing thru. You can also find plenty of solitude if you want, as well. All depends on what you want.
Check out RV dealer lots and shows when you can and check into different types of rigs to see what feels right to you. Do you want a separate "bedroom", or are you OK with turning the couch or dinette into a bed each night? Do you want a separate shower, or is a "wet" bath good enough? Do you need lots of storage or not so much? Do you like the idea of driving the RV and having access to everything without having to go outside, or would pulling a trailer be OK? Do you need/want a separate vehicle to do sightseeing? Then you can either get a "toad" (tow a car behind the RV), or tow a trailer or 5th wheel with a truck or SUV. If not, you can just unhook from your campsite and drive your RV around. If it is small enough, that might not be too difficult to do. Maybe you are a bit claustrophobic and would like a slide or two for extra living space. Will you occasionally have others (kids/grandkids) staying or traveling with you and need some extra sleeping areas? Then there are all the different layouts to consider...
Lots of things to think about...
Good luck and let us know what you come up with! Feel free to ask us any questions you have!