Re: "Knowing you only have 36 exposures at a time can impose discipline."
That's luxury. In the 90s I switched to 10-expure medium format because I thought 36 exposures was causing me to be too slap-dash. Medium format (in my case a second-hand Mamiya TLR) was a great because developing and enlarging it was easier that 35mm (detail and tones was fantastic, dust was less obvious, handling it was easier).
In the early 2000s I remember the great Usenet flame-wars about 35mm-vs-digital and later medium format-vs-digital.
Nowadays my 20MP Sony Xperia Z3 Compact phone can probably pick out more detail than Fuji Velvia, but it still doesn't have a colour, tonality and veracity of film. RIP silver.