I have so far managed pretty well without using wall breakers. I find them over priced and all too often don't get the job done, either running to a pointless wall or being destroyed before blowing up. I admit I may just be useless at deploying them, but I didn't really give myself much time to perfect using them, Stopping at around TH5. I know they can be useful to get to storages, but I'm happy enough barching collector raids and those bases with storages on the edges.
Nearly every army I see people recommend includes a splattering of wall breakers. so, with a move to TH9 coming in the next month or so (once walls complete), is it going to be worth learning how to use wall breakers effectively, or can I get by without them? I read a lot about players at 9 & 10 using air units so maybe I can leave them out altogether. Advice much appreciated.

