No rach , i think its one of the most selfless and beautiful acts a mother can do (if there able i mean) and if i saw a woman breastfeeding her child and they were older than five, or whatever, i wouldnt bat an eyelid, my friend fed her daughter til she was 3 and a half (then the girl decided she didnt want it anymore) and i never thought anything more of it .
I just personally couldnt do it myself cos i think id get tired of it thats all