What do programmers hate?
Fashion victim technology choices - being mandated to use something that is either wrong for the job or bad at it because it's hip, or because some big company uses it (case in point: MySQL - a tinkertoy as a real database, but "Facebook uses it" - yeah, they rip the SQL front end off it and use it as a giant distributed hard drive - it works because they don't use most of it). And then blowing a bunch of development time working around its problems.