why are so many people against NTR? One of the hottest things you can do in a long term relationship after things get stale and boring is watch your significant other take on another dick,
NTR is the way.
Because what you are describing here is NOT NTR, it is either
Sharing (NTS) or being a
willing Cuck.
NTR is not that. NeToRare is your wife cheating behind your back, or doing it in front of you to shame or humiliate you (as a cuckold), with no love involved, just any cock but yours. And preferably much bigger.
Most NTR does not involve you actually watching and being happy about it, unless you are a cuck. And that pisses a lot of people off. (being a cuck) A lot of NTR occurs without the MC being involved at all, and just because the wife becomes a slut, without the MC's knowledge at all - cheating on you.
There are many players who don't ever want their FMC to even go near another dick, without being actually involved themselves.