I spent a good few years rooting my Android phones, installing ROMs, etc. Quite a while ago I stopped, due to being pretty happy with the performance of this phone, and lack of time/interest in doing it any more. Consquently my phone is running 7.1.1 and ony has a security patch date of September 2017 
I realise this is not a good state of affairs. I'm not a coder or anything like that, and I've forgotten most of what I learned about the specifics of this phone a long time ago. If I want to install a new ROM, it's going to mean a lot of reading to bring myself back up to date.
So, aside from my dire security situation, is there actually anything that is going to make my life better by installing an Android 9 or 10 ROM, over and above 7.1.1? Or is it just window-dressing? I'm looking to keep this phone for a while longer yet, and have just ordered a new battery for it, so I thought a software refresh might also be nice. I just wondered whether anyone wanted to offer an opinion on whether it's worthwhile, given it will involve a lot of work for me since I'm so rusty!
I realise this is not a good state of affairs. I'm not a coder or anything like that, and I've forgotten most of what I learned about the specifics of this phone a long time ago. If I want to install a new ROM, it's going to mean a lot of reading to bring myself back up to date.
So, aside from my dire security situation, is there actually anything that is going to make my life better by installing an Android 9 or 10 ROM, over and above 7.1.1? Or is it just window-dressing? I'm looking to keep this phone for a while longer yet, and have just ordered a new battery for it, so I thought a software refresh might also be nice. I just wondered whether anyone wanted to offer an opinion on whether it's worthwhile, given it will involve a lot of work for me since I'm so rusty!