Yea you sound a little bit jumbled up in your title and post, but I think I got it lol. I used to find bupe a lot of fun, before I got more involved in the opiate scene. I used to eat a quarter of an 8mg disc/wafer, so 2mg. It would really open me up socially and make me just want to talk, moreso than other opiates do. And having social anxiety this quality of bupe was a major plus.
I would hardly describe bupe as euphoric (especially compared to say oxy or even hydro), but I might have told a different tale years ago. The duration was the best part IMO. 12 hours and beyond and I would still be chainsmoking, which is my favorite thing to do while on opiates. I now use bupe mostly to deal with my mild to moderate withdrawals and cravings and the like brought on by casual heroin usage.
I do know many opiate naive people who have a lot of fun with subutex, suboxone, and all of that stuff. They can easily get real fucked up and stay that way for a long time. But if they end up swallowing any of their dose it turns into a horror show real fucking quick. I would say bupe can definitely be recreational, but if you get involved with other opiates the fun aspects of this drug will subside fast. So depends on the individual and their tolerance, but I find it to be more useful as a tool than fun at this point