My thinking is why unnecessarily flood the network with transactions? Would you want to double the size of the chain just for kicks? I wouldn't, but that's just me.
also, some people think memo activity unnecessarily floods the network. only way we can say if txns are "worth it" is if someone chooses to pay the txn fee.
just like we can say people waste their money on useless crap but if they're choosing to spend their money that way who are we to judge.
