i cut the leaves off so that i could bring them inside. i did not want all those leaves falling off in the house. also, i did not want to deal with spider mites. that is the only reason i cut them off. i most likely would have left them on if they stayed outside this winter. i just didn't want to worry about moving them inside if we got a cold snap. plus, i am hoping for lots of blooms next year.
there are a million and one reasons why they don't bloom for ppl. most of the time the plant needs something that it is not being given. sometimes, it seems that age can overcome those restrictions. i love this plant and fortunately have lots of time to wait.