Getting used to sharing a bed with the wife took ages. So would much prefer to sleep alone, as I did for almost all of the first 50 years of my life.
I have thought about showering with other men. That might be okay. As long as they didn’t hog the soap.
Off topic, but I remember at uni, I was bored, so was using a rubber (of the eraser variety) as a printing stamp to print the word “CUNT” - just ink the rubber and stamp.
My friend sat next to me decides to ask a question and puts his hand up. Just as the lecturer is turning to him, I smack the rubber on his forehead and it works perfectly leaving the word “CUNT” perfectly stamped on his forehead as he asks his question. Lecturer managed to keep a straight face. but mate wasn’t impressed.
The average man is larger than the average woman. Average double beds are sized for one man and one woman. Two men won’t have a lot of room (enough, but not ‘plenty’).
If I sit on a sofa with Mrs VB then we have no problem if our personal spaces should encroach - indeed we might choose it deliberately. But if I were sitting with another man I wouldn’t actively choose to sit any closer to him than I had to.
When I did the tandem parachute jump I was strapped tightly to the professional. In the plane you have to sit between his legs. He and his colleague (there were two pairs of us) said they much preferred jumping with women, who tend to have less boney bums. They (the guys) said that with the prettier ones a certain degree of self-restraint was called for though.