Our trip back also defined where we want to live, and it’s definitely Australia and not UK, which is interesting that although I’m fairly sure I’m a lot older than you, we have reached the same decision, and we have also made the decision that we are unlikely to bother to go back again.
We have a son and our only grandchildren in UK, some posters will know that our DIL, has never been particularly interested in having any sort of relationship with us. On this trip both my husband and I caught covid, and even though they live less than 10 minutes from the flat we rented in Bristol, not once was any help offered by her, ( she doesn’t work) my son wasn’t much better to be honest, but he worked away in London, 3 days a week, and we knew that he had a long standing trip organised the weekend we were sick, and is almost worn out coping as he does everything She couldn’t even be bothered to ask us how we were, when we eventually saw her. My Australian DIL emailed several times to see how we were, and I know that even though they live an hour away, shopping and food would have been done for us. The grandsons were allowed to spend almost all their time gaming, I know lots do, so both my husband and I wondered why we had bothered, as there was little time in their lives to have much to do with us. It felt We talk more on whatsApp than face to face
The contrast here in Australia is that we have a son and daughter plus partners here, and extended family who emigrated here from Africa who actually like us and enjoy spending time together. We have many great friends in UK, who we loved catching up with, but we have made equally good friends here.
Reference the example of my family who emigrated here, like other families I know,, from Africa, there are now 3 or more generations living here now, so the brave ones who first came here, are now grandparents and even great grandparents and have their extended family near them in their new country, and their children, grandchildren have cousins, aunts and uncles.
Im not knocking UK, no where suits everyone, and people genuinely miss everything, but it’s also possible to establish a multi generation family here, it just takes time.