Actually Allah decides what's good and bad for us and when we pray, if that is not good for us in long run (end result), he blesses us with an alternate that is surely useful for us. We may not be able to realise at that time.
Secondly , if we stop praying (dua) to Allah s.w.t, we may fall down from our present state ( which may be much better then falling down from that level). Please continue praying. One day you shall realise you have benefited from your duas inshAllah