No, it really isn't. The time you spend with UI is much greater than time you spend managing your collection so bad UI is far worse than a couple of evenings getting your collection in order. Also you get to enjoy your favorite albums not getting taken down without warning or reason.
you forgot to mention the time it takes hunting for your 'obscure teenage years' CDs on eBay, setting up search alerts for each CD to appear for ~$1 with cheap shipping, waiting three weeks for them to arrive from Lithuania, alcohol-rubbing the dozen sale stickers off the jewel case, cleaning the CDs with lint-free holy water, ripping the audio losslessly at superfast 52x, physically scanning with a scanner and optimizing the album artwork, categorizing, metadata'ing, updating and maintaining your Frankenstein music database, updating the online database for prospective fake internet points, and relisting each CD at $2
Or you can just torrent them. Chances are that those "obscure teenage year" CDs aren't and never will be on spotify either so if you want them you'll have to go through all that in addition to paying a service with incomplete library and crappy player.