In case anyone wonders, here are some points to get you started:

[X] created by a company that can't be trusted

[X] made mandatory by lazy devs && corporate bean counters who refuse to let other developers do the professional thing and make stuff work cross platform

[X] worse than the alternatives in many ways except being feature-by-feature and bug-by-bug compatible with the market leaders (yep: memory use, battery use, extensions)