Buddy you are asking in Bitcointalk.org specially in Bitcoin section so what do you expect from us?

I have a bad experiences in banks since many years ago thats why when I come to learn about bitcoin ? and its network and system , I now constantly trust this for many years and yes, if I did invest my monet in banks , I thing mine will remain as almost the same comparing to how much I have now.

so the answer is clear , Invest or deposit in Bitcoin specially as he is asking for long term purpose .