Loungers are a very subjective thing. I've heard from dealers that 80% of second time hottub buyers do NOT get a lounger in the second tub, but I have never found a true source for that statistic.
Part of the problem with loungers is that every person has a different buoyancy which means some people (usually shorter or those with a higher BMI) may float out of the lounger seat completely! I spent a lot of time studying loungers in hottubs because I was trying to see if I wanted one in my tiny 3-seater (with only three seats, the lounger takes up half the tub so we better like it). In general it seems most loungers are built for average-height people (5-foot 10 inch for Males I believe), with an average bmi.
Every brand of tubs has a different shape lounger, so it's really beneficial to wet-test a lounger from that brand/tier and ensure you're comfortable and don't float out. I've heard dealers say if you cannot wet-test a lounger seat, don't buy it because you could end up with a bunch of wasted space in your tub which you never use.
Personally my wife and I love the lounger seat in our tub, it's the first spot I always go to and the one my wife and I fight over constantly. I'm a guy who likes to recline in a chair normally, so the lounger is just an upgraded version of that (I've even got a fancy gooseneck suction cup phone mount so I can watch TV/Movies with my phone while lounging haha).
