Agreed with Patricia. Those are one of the features that too many people use for a month before it gains cobwebs.

You want to spend 10K extra over the average 7-10K of just a regular shower build in order to use it 20x? Just check into a top luxury hotel with spa attached every so often and still be many dollars ahead.

A steam shower is really nice. I'd use one pretty much daily if I had it and really regret not putting one in our master bath. Getting it retrofitted just isn't realistic. But we did the bath like 6 years ago and I had never used one at the time. Budget was also much tighter then.

Whole steam room (if that's what you really meant)? Bit much.

I totally would. But I come from Northern Europe where there is a long tradition of using sauna and steam rooms. If you live in a colder climate, it is absolutely worth it.

Budgetwise a sauna is typically more affordable than a steam room due to engineering costs and finishing materials.