But councillor Dave Macpherson said it wasn't something the city wanted or needed.
"And my observation is most of the city doesn't want it either. The city is not required to open its doors to anything and everything.
"Plus the whole sexpo is just designed to make money out of exploiting women. It has no redeeming features."
Mr Macpherson said the council had to draw the line somewhere despite Claudelands' struggle to meet its financial targets.
"What if the Nazis came along and wanted to hold a rally and promised us $50,000 - would we do that?"
On hearing the news, Mr Crow said it would be a decision the council would rue and he would not let them off the hook "that easily".
"Hamilton City Council are throwing away their money and I'm going to have a lot of fun with them over this.
"I hope Hamilton ratepayers are really happy to fund a council that turns down revenue on a loss-making centre. I hope they consider that at the next election and vote these idiots out."
Staff decided to let councillors make the final decision because of the sex expo's potential moral impact on the community.
Councillors voted nine against and one for the event. Mayor Julie Hardaker and councillors Daphne Bell and John Gower were not present for the debate.