I just think Android is a bit shit to be quite frank.
I have an Android phone and tablet, and they both crash/freeze/throw some kind of wobbler at least twice a day.
Apart from anything else, it's just inconsistent. One moment, I can tap and hold to save an image. Next time a few minutes later, I can't.
It just doesn't fill me with confidence as an OS if I'm honest. It's really frustrating.
But the 80-90% of the time it works as advertised its rather excellent. It's failure rate is just way too high for me.