I'm 35 and people joke that I have the musical taste of a 50 or 60 something, haha.
I am going to see Sammy Hagar and the Circle next week (His band with Michael Anthony, Jason Bonham and Vic Johnson) FYI.
Give me Rush, SRV, Led Zep, Heart, Clapton, Joan Jett, the Eagles, etc over 95% of what is produced today. Taylor Swift is IMO not that great of singer, it's all image as that is what young people (The majority of music buyers these days) go for and since young people change their tastes all the time she has a good chance of being on "where are they now?" in a few years.
The most talented modern bands/artists are the ones that target music for a smaller but more discriminating crowd, for example: Halestorm, Joe Bonamassa, Kenny Wayne Shepherd (Can he be called modern when his first record was released in 1995?), Samantha Fish just to name a few.
Since this is a racing board, I'll give a car analogy: Making music is like designing a car. You can design a car by focus group and wind up with something like an Accord or Camry. They're fine cars, but they are aimed at the masses who will trade them away when the lease is up rather than car enthusiasts. Or you can have actual engineers and car guys design a car and wind up with something like a Mustang, Challenger, Camaro, CTS-V, etc with the mindset of "who cares if 70 percent of people don't like it, we'll sell it to the 30 percent of people that do like it, they're more passionate about cars anyway!" You rarely see an owner of those cars giving them up unless there is an issue and if they do, it's to get the newest model. Music is the same way pretty much: Sell out to cater the masses and be forgotten about in a few years, or stick to your craft and while you may not play in arenas you'll have a good chance at a loyal fanbase that will stay with you forever.
PS: Besides becoming all about image and auto-tune, another thing that is killing modern music is "the loudness war." This explains it:
http://dynamicrangeday.co.uk/about/ Even smaller-market artists like Joe Bonamassa are not immune to this and it's infuriating.