I leave the darkroom semi-permanently set up. I.e. the boss makes me dismantle it when we have guests staying for an extended period, such as over Christmas. So most of the time it's all ready to go. One of the many advantages of the Nova tanks is you can leave the chemicals sat in them for ages and they keep really well. For instance, when I print in colour, all I have to do is look in my note book to see how many prints I made in the last session, drain off 20ml per print from the tanks and add the same amount of fresh chemical (which I have pre-mixed and ready). That typically takes less than ten minutes. I turn on the heater two hours before I want to print and off I go. B&W is even easier as the chemicals are already at the correct temperature. It's very quick and easy.
Like others have said, for me it isn't about convenience. If I wanted that, I would be still be using my old Fuji X100S and viewing everything on screen and syncing them with my iPad. I shoot film and wet print because it connects me to my photographs and I get an enormous sense of satisfaction from feeling that I have 'crafted' each print. I find the more I keep away from digital, the happier I am. Maybe it's my age, but I've started doing the same with music. I listen to vinyl almost exclusively now. It's probably five years since I played a CD, except in the car.
RA4 printing is so quick, cheap and easy that I'd estimate I print at least double the photos I would have done if I'd had to scan and inkjet print them. I think that's partly down to finding the process addictive, so although a negative may not look perfect or an obvious keeper, I will still often print it. It's surprising how great some prints turn out to be when you see them at 12" x 16" compared to a quick test scan.
I accept that what I do isn't for everyone, or for the vast majority, but it makes me really happy and that's 99% of what I want from photography.