I've got all-in-one bath taps and shower. I asked about one of those electric power showers when I had the nasty stained social housing shallow acrylic bath taken out and a deep enamel bath put in with an integral shower/tap fitting as opposed to the rubber one that fits over the bath taps. Best money I ever spent. The plumber said I may as well stand there & burn ten pound notes as power showers were expensive to install and not that ecologically sound as they use more energy and more water. She also reckoned the water pressure wasn't good enough either. A trustworthy plumber is worth their weight in gold. First female plumber I ever encountered and she was brilliant.
I never grew up with a shower (apart from the horrors of cold communal showers at school after PE) and when I first left home I often used the local Slipper Baths as opposed to a shared bathroom with a slowly trickling, fumey Ascot heater and other tenants banging on the door telling you to hurry up as your bath filled with lukewarm water.
Anyway, I live in a very limescaley area and I find white vinegar very good. I remove the shower head about twice a year and soak that in white vinegar overnight to remove limescale. I don't have a glass partition, just a shower curtainthat fits inside the bath along its full length that does need replacing every now and then.
For me, a shower will never be as luxurious as reclining in a deep hot bath.