I've been reading through the past topics on Private insurance... but seems kind of out of date

Anyways, the company has just decided to have BUPA- but I don't think I understand the point of it - it doesn't cover any of these conditions:
ageing, menopause and puberty
AIDS/HIV
allergies or allergic disorders
birth control, conception, sexual problems and sex changes
chronic conditions
complications from excluded or restricted conditions/ treatment
convalescence, rehabilitation and general nursing care
cosmetic, reconstructive or weight loss treatment
deafness
dental/oral treatment (such as fillings, gum disease, jaw shrinkage, etc)
dialysis
drugs and dressings for out-patient or take-home use
experimental drugs and treatment
eyesight
HRT and bone densitometry
learning difficulties, behavioural and developmental problems
overseas treatment and repatriation
physical aids and devices
pre-existing or special conditions
pregnancy and childbirth
screening and preventive treatment
sleep problems and disorders
speech disorders
temporary relief of symptoms
treatment in a hospital that is not a Bupa Heartbeat hospital
unrecognised providers or facilities
I've got my obvious, pre-existing condition that I keep moaning about- and well, while isn't diagnosed, is stilll a pain in my ars*... and I'm sure they'd call it "pre-existing"
So why would you pay £50 /month for something you can't even use? To just speed up the process??? Yeap, the NHS is really slow, 1 month for a simple ultrasound doesn't cut it for me, but is it really worth the extra £50 a month??? I don't get it???
We don't have a BUPA hospital remotely close to here, so it would still be our local NHS hospital that I'd use (privately) and since I've spent a lot of time in that, I find it clean, safe, etc, some of the other arguments for going private... I guess the only thing would be a private room instead of a ward? (Though I have heard that we can pay a bit more for a private room out of pocket, if its available, on the NHS, priority given to those with very serious conditions though).
Please enlighten me

(lots of confused faces in my post, because I am!)
I should also say that we have a health care scheme too that we can claim things back, so if I went private pay out of pocket, I can claim some £££ back... so even more confused!