Point taken, but your experience is not necessarily the norm.
I find Art Bell creepy myself, but in talking to many widows and widowers I've found that most miss the companionship; the give and take, having someone there to express emotion, share meals, share experiences.
Heck, even when my dog died I missed companionship. There is nothing inherently "wrong" about that.
I find nothing wrong with seeking companionship. I do it via hobbies, activities etc. When I come home and the house is empty, it's very soothing (yes, odd for a lot of folks, I know).
I've just seen so many people miserable who've married just to have a body under the roof. Seriously, folks they didn't even like or have that much in common with, but they were the only 'marrying' ones on the market at the time.
So Mr. Chrome-Glass-Ultra-Modern finds himself hitched to Mrs. Country-French-Potpourri-Slinger. He's miserable, she is too...but they aren't even sure why.
And I've dated men who didn't want to get to know 'me'.... they were just shopping for a wife. They asked a bunch of shallow questions, decided we 'got along' and popped the question. And they were bumfuzzled when I said I liked being alone.....
For them, 'being alone' was like a disease that had to have a cure. No matter how radical.
To me, someone will have to be pretty incredible to make me want to change my life ;)