Why you cannot keep bonsai trees indoors

[Attmos]

Don't get me started on how terrible I am with this species! I have completely removed the life from three. I feel that is enough success for one person's contribution to species population control.
Fukien Tea, from my understanding, is exceptionally temperamental. Pretty sure they are tropical, but they don't like desert climate at all. If whatever you are doing is working, then keep doing it.
Two schools of thought:
Common sense says "If it ain't broken, don't fix it."
Government thinking says "If it ain't broken, fix it till it is."

If you add at least a USDA zone (a slightly more specific area, such as state, would be even better) will help us give you better custom advice.

I have a Fukien. It hasn't really grown any since I got it about 5 years ago, but it's been indoors that whole time and does produce little white flowers, sitting in a west facing window. It's actually recovering from mealy bugs or aphids (whichever look like white webs) at the moment, like a champ.

I've heard they're temperamental too, but I'm not seeing it. Think I'll move it outside this summer and see if I can get some growth out of it.