I happily concede that if you really enjoy playing the lottery then it can be eminently rational to do it. The person I was replying to wasn't making that argu

I happily concede that if you really enjoy playing the lottery then it can be eminently rational to do it. The person I was replying to wasn't making that argument, but a completely different one: that the utility from the potential winnings outweigh the costs for some poorer people. I think that's monstrously implausible.