Let me assure you that there's (yet?) no Xylometazoline epidemic ravaging though Europe, with tens of thousands of people dying each year, destroying families and communities, in effect causing endless grief for people and huge profits for pharma companies. There's also no black market for Xylometazoline, with people overdosing because there's nasal spray on the street that is contaminated with a much more potent derivative than can kill pretty much instantly. I've also never heard of babies born with congested noses that spend their first weeks of life going through a Xylometazoline withdrawal.
So to summarize, I think my initial statement that a physical dependence on Xylometazoline is less harmful than a dependence on opioids is probably correct.
I've never taken any opiod, but two weeks of being unable to breathe properly or sleep sounds as hellish as my idea of quitting heroin.
I mean, I quit smoking, hardest thing I've ever done, and the physical withdrawal effects were insignificant compared to that.
It's funny; looking back, I quit smoking exactly BECAUSE I was suffering from crazy congestion, and after a week of Afrin and poor sleep I thought quitting smoking altogether would help me regain my sanity.