Yes. A new Cessna 172 Skyhawk probably cost $310,000 or more.
Even renting an older (though nice and very well-maintained) airplane is $90/hr, which at least includes fuel.
Some people kit-build planes, but that's a lot of work and it all has to be done and maintained right.
Insurance is expensive. Renting a hangar stall is expensive. Continuing education is expensive.
Regulations don't help, though there are low-regulation categories. Those are a considerably higher risk category because some of the people that take advantage of the lower barrier to entry are a bit more lax in doing things properly.
Learning to fly often isn't a good career move because pilots are now generally paid poorly.
One really has to want to fly badly, especially to give up several other hobbies to afford flying.