At what point are you considered alone forever?

From reading a few posts, this sounds like a place to sound off at the very least, and hopefully find some thoughts of others on a subject. I honestly just signed onto this system so forgive me if I misunderstood.

I recently turned 60. I have been divorced 20 years. My kids are grown and on their own, so it is just me and my dog. I wonder at what point do you just decide you will probably be alone until the end? I mean, I have family and my kids are only an hour away, but the majority of my time is spent home alone. I go out and do things, but just not every day. But most of those things I do alone. I meet friends for a drink or lunch every now and then, but that's not even a weekly occurrence. I am retired and don't need anything but really don't want to go back to work, so I have days between busy and nothing. But again, I don't want to do anything some days.

I know most would say I am lonely and depressed, but I don't feel like I am. (Not being a jerk but would I feel like I was if, in fact I was? I don't know). Anyway, I don't have thoughts of harm, I don't sit and wish someone would call, and honestly, I laugh at myself quite a bit. I have one really good friend (no romantic attraction at all on either side) and we talk sometimes 3 times a day on the phone while she works... I think she is bored...lol.

I have dated off and on, more off than on recently, but I get exhausted because so many women in my age range are looking for immediate marriage and I am just not sure I want to do that. I don't have a problem with a living together situation but what is the benefit to marriage at this point in life? Religious stuff aside, if I were to get married I would not change my will or my financial stuff, or anything like that, so what is the benefit in a certificate? But they want marriage and they want it now. I had a long-term friend with benefits (sorry, but it's true and neither one of us wanted anything more) but she moved across the country a couple of years ago.

I do admit I would enjoy sitting on the couch with someone in the evening and watch tv, rub their feet, and just relax. I would enjoy going places with someone, either for the day or on a road trip, going grocery shopping together, and just enjoy and live life. I would be okay with being "in love" like that again, but at this point will be happy with compatible and stable and just liking each other a lot....lol.

Is there something wrong with me or am I looking for something that doesn't exist?