I wrote the exact same post about rods and backs about 4 years ago, PFB cosleeping and everyone and their granny was telling me "oh you'll still be doing it when they are 5 etc etc"
DD1 slept through the night 8-8 at 12 weeks, we continued cosleeping until she was 15 months and she went into her own cot in her own room without a problem and still is a good sleeper.
Then we had DD2, again cosleeping from the off, she fed up to 6 times a night right up until she was a year (sorry), it all depends on you really if you are happy with it then fine, I decided at a year that enough was enough and wanted to get some decent sleep back and she was getting so fidgety, in the end I had to go on nurseing strike, she was never left alone, DP sat with her and comforted her, first night was hard 50 mins of crying, second night 10 mins and that was her, in her own cot and room by 13 months.
Am currently cosleeping with DD3 who is 7 months, she wakes on average twice a night for milk, I actually believe she is worse when she knows I am there, she can smell me and gets irate if boob isn't there for her. Yes it can be draining but she is only young for such a short period of time and at 7 months she may still need milk in the night. We do have a bedtime routine though and I do get a night to myself, for example, tonight she went to bed and was fed to sleep at 8pm, once she was sleeping I moved her into the bedside cot by my bed, she will stay there until her first wakening which could be when I go to bed at 11ish or shortly after.
It's up to you if you see feeding to sleep as a problem, I don't right now and can correct it down the line, I do think you need to get a bit of you time back of and evening I would go mad if I didn't have these few hours (maybe thats because I have 2 other DC to deal with).
Have a look at No Cry Sleep Solution it has gentle ways of removing the boob from going to sleep, it's not a quick fix in a week but more of a gradual thing.