I have never been blessed with that opportunity. (always had a hubby and two kids along) But I think it truly depends on the individual.
I would LOVE IT!!
Karaoke and the piano bar are always great places to meet folks and chat. Carnival (from what I have read) is good about placing solo folks together at dinner.
I do get tickled....when we get on a ship....hubby does the shows and listens to the solo performers on the Promenade, I do karaoke or the piano bar, the boys do Camp Carnival and so "at night" it always seems like I am a solo cruiser.
One one cruise, hubby finally came into the piano bar on the last night to say he was headed to the cabin and did I need to pack anything else to put out the luggage. When he left, the folks I had been singing with all cruise asked who he was. I said that is my husband. They all looked shocked. They thought I was on the cruise alone.