Why are NHS graduate jobs so low paid?

I'm a non-graduate, but considering a career change into a healthcare profession (ODP, paramedic, radiology etc) but not doctoral level.

Considering all of these "specialist" professions that require a 3-4 year degree minimum and costing £30k+ in fees for some that aren't on a NHS bursary why are NHS jobs so low paid?

I mean most jobs like ODP or radiologist, staff nurse, midwife etc are band 4/5 earning low-mid 20k's for a job with specialist knowledge that will only be accepted with a degree. Even if you take a step up in a more senior position you are lucky to be around band 6 earning close to 30k? Is that really all those positions deserve?

I know PhD level you are earning north of 40-50k within a few years but it's a little discouraging to those of us looking at positions lower than PhD to know that after working hard for a degree, and working even harder for several years the best we can hope for is £30-35k?

I'm a non-graduate, but considering a career change into a healthcare profession (ODP, paramedic, radiology etc) but not doctoral level.

Considering all of these "specialist" professions that require a 3-4 year degree minimum and costing £30k+ in fees for some that aren't on a NHS bursary why are NHS jobs so low paid?

I mean most jobs like ODP or radiologist, staff nurse, midwife etc are band 4/5 earning low-mid 20k's for a job with specialist knowledge that will only be accepted with a degree. Even if you take a step up in a more senior position you are lucky to be around band 6 earning close to 30k? Is that really all those positions deserve?

Most people don't go into these careers for the money, I work in the NHS because I like it, I like looking after patients in my role. If you ask anyone, of course they'd like to be paid more, but money isn't the main motivator here.