Watching any youtube 'reviews' is really bad idea because those are done by haters and luddites. I haven't yet seen even one honest video.
Short answer for OP would be: if you're buying new get 8 because that's the way things are going to go and you'll better get used to it. If you already have 7 and are thinking of upgrade, there are no major reasons for it yet. I upgraded to 8 (pro) because I like the multiple monitor support and built-in Hyper-V and IIS.