I have a rather large collection of anime on my shelves, but if there is one thing I learned pretty early on it was not to blindly spend my money on a show that I haven’t seen or watched to the end. My experience has been that while the first few episodes might be great, never expect the rest of the show to follow suit or, in a few cases, even follow the same plot or genre; others just end on sad or tragic notes because anime has never followed the Hollywood trope of happy endings. That unpredictability is actually what interested me in the format to begin with since I was getting bored with the whole “happily ever after” cliche that Hollywood churns out. Of course, that in itself is a double-edged sword. While some endings hew towards happy or bittersweet, others took that factor to its extreme conclusion and just went all-out batshit insane.
Several times I got burned when I purchased a show that was great for almost the entire run of the show only to quickly descend into an absolute clusterfuck in the last episode or two. As a result I have made it a point to never drop a dime on a show that I haven’t already watched from beginning to end (and if you’re curious why I would buy something I’ve already seen, it’s to support the industry – and my crippling habit to collect things).