I've never had a single problem with iTunes. But like usual, biased Apple hate = hate everything and anything they create. The fact is Apple has always been the innovator and Microsoft has always walked the trails Apple blazed. Apple II ushered in the PC era. The Mac introduced the GUI interface and mouse control. Take your pick between Apple, Atari, or Commodore for popularizing advanced graphics and audio.
Microsoft competed and succeeded by being cheaper. It had the advantage of IBM PC clone manufacturers. The systems were inferior to the competition, but cheap. And they began to swallow up the marketshare, and unlike Apple, Microsoft embraced games even though Apple systems were usually better equipped at handling the best games. Steve Jobs wanted Macs and Apple computers to be seen as serious business and educational tools, and not as toys.
But still, Apple continues to innovate and popularize new technologies, and Microsoft continues to chase them. Only now, Apple has retained a firm stranglehold in those sectors, and Microsoft fanboys are crying about it. So basically, Microsoft is like a really successful Chinese knockoff company.
I don't understand why anyone over 16 would have blind hatred for any company, and treat any success like they just raped and murdered your family and any failure like you won the lottery.