I'll add my voice to those urging you to ho ahead with the hip replacement, marymary. I soldiered on far too long and I very much wish I hadn't.
I had the op at the beginning of August this year. I'm 74. I was back driving after 3 weeks, doing pilates at 6 weeks and I've taken up horse riding again. I have my life back, completely pain free, apart, of course, from the inevitable post op pain (which didn't last for long) and muscles complaining about being used again😆 I really regret the time I wasted being stoical.
My 'bad' leg was noticeably shorter than the 'good' one. The surgeon corrected that and there is now no difference between them.
I had the op at a private hospital as an NHS patient, mostly because other people I know said it was good, but I understand that any of the 3 NHS centres I was offered are also very good.
69 is by no means 'young' for having a hip replacement. My OH had both of his done in his early 50s.