Why did we stop going to the Moon?

In July 1969 humans landed on the Moon for the first time, as part of the Apollo 11 mission. But why haven't we been back since the Apollo 17 mission in 1972?

Yes, The Apollo Moon Landings Really Did Happen

Moonshot at 50: A look back at the Apollo space missions

Why did we stop travelling to the Moon? - Quora

Is there something NASA hides and doesn't want us to know about

Moon landing 50th anniversary: Why man never returned after Apollo

Why Did We Stop Going To The Moon?, Unveiled XL Documentary

Why did NASA stop sending people to the Moon? Are they planning any new missions to go back there? - Quora

The missions before the Moon landing

Why has there been no manned missions to the Moon since December