I was a teenage punk/hair metal fan in this era, and I too hated Wham, Spandau & Culture Club. I thought Duran were OK. (nothing special though, but just OK)
Nowadays, I'm 52, and I AM one of the old fart generation, even though I don't feel it (mind you, ask me again after a late night listening or playing loud music in a pub full of half-whizzed twentysomethings and you'll get a different answer) I've mellowed as a listener, and my tastes have broadened. I now listen to jazz occasionally, and I've been known to have a little boogie to some of the current chart fodder once in a while, but dig deep into my heart and you'll still find my core is full of 70's & 80's stuff!