I've transformed from a pretty staunch republican to a more ambivalent one over the years.
I can't get as worked up about the UK replacing a ceromonial figurehead monarch with a ceromonial figurehead elected president, as I used to. Under a parliamentary system such as ours, there is no scope for a head of state whether elected or not to be anything more than a cereomonial figurehead, as seen in Germany, India, Ireland etc., unless parliament voted to transfer significant powers away from themselves, which would never happen. How many people outside Germany, India and Ireland or without cultural ties to any of those countries could even name their presidents without looking them up? I can't imagine in my lifetime that there'll ever be sufficient (i.e. a majority opinion) clamour to replace a globally famous and iconic royal family / brand with 'more politics', especially as that additional politics would just be to elect a figurehead.
Replacing FPTP with a form of PR at general elections is an overwhelmingly more significant way to improve British democracy IMO, and and I'd argue that House of Lords reform is as well. I know that House of Lords reform would be seen as 'more politics' as well, but it's safe to say that the peers are nowhere near as iconic or popular as the royal family are !
Now if I was from / had strong ties to any of the other 14 'realms' such as Australia, Canada, Jamaica, Belize etc., where the British monarch is also the head of state, I'd certainly still be a staunch republican, and would not want a head of state from thousands of km away purely due to past colonisation. I hope that as many of those other 14 countries become republics as feasible and as soon as possible.