Ah, @Curlylox That makes sense. But your GP ought to know that dry vaginas need local estrogen. Also, 1 in 4 women use both HRT and vaginal estrogen. I hope you manage to get some - it's very weak - and many oncologists are ok about women using it. It's a balance about quality of life. Hope the new relationship works out for you! 
@Eckhart I'm guessing and apologies if I'm wrong, that you have not yet experienced menopause or vaginal atrophy?
VA or urogenital atrophy as they like to call it, is not really about sex . It's about vaginal health and bladder health.
Lots of women (including those in their 80s and 90s) use vaginal estrogen. It's not a case of 'restorting' to it, as if it's dangerous or undesirable in some way.
In post menopause, the vagina changes- even smear tests can become a huge problem. It shrinks in length, doesn't stretch so easily and the tissues dry out and become fragile. This causes symptoms often including weeing a lot , incontinence, and pain, regardless of whether someone's got a sex life.
In really elderly women with severe VA the vaginal walls can actually stick together permanently if not treated.
Lube is a bit like applying handcream. It's okay-ish for some extra moisture but it won't reverse changes or treat the cause.