What do I think?
I personally think the child is getting a little bit old for bf. I don't really see the nutritional benefit if the child is getting an otherwise balanced diet. I understand the connection thing but you can still connect with a child in other ways.
I don't know what the ideal age would be to wean off. But for me it was 2 with dd1. No it isn't to do with sexualising the breast. I can't really explain it other than to me the child is probably a bit old for my liking.
But each to their own. Its not like it offends me or hurting me or dd's in any way.