why does itunes suck so badly

It's been a long time since I had the misfortune of having to use iTunes, but I hoped it would have been improved to the point where basic functionality worked...

So, more in hope than expectation I pointed it at my 1000+ albums of FLAC and asked it to import them into itunes. For the record, the albums are tagged properly and come complete with Album art, so there's no excuse for iTunes to have a problem. After about a minute of scanning iTunes finished and succeeded in adding about 100 tracks randomly selected from my library, no errors, and no explanation as to what happened.

So, is iTunes really this useless?