I have always believed our time alive is precious whether we're 10 or 100 years old and everything in between. It feels like there is more for us to lose in our 60s, 70s, and 80s if we follow our truth. I don't wish to push you in any direction. But maybe there's more to gain, too. We all will eventually die, and death is largely a solitary experience. I anticipate that when I'm laying there dying I'll reflect back and of course there will be regrets, but I'll also have pride that I finally did what I'd dreamed of for so many decades.
The reality of being a senior is that romance is hard to find, let alone finding someone who'll embrace our being trans. The field at our age is smaller, many are already married or committed. So yeah, look for dates, but moderate your expectations. Don't transition in the hopes/plans that you'll finally be in a romantic relationship. But there are communities of support. They need you, you need them.