What stopped you from transitioning earlier?

Im 24 and came out to parents recently and they said think more… wait for longer… transition when ur 40… and it sounds awful. But apart from the gender stuff I am quite stable life wise currently and it doesnt seem very logical to suddenly do a 180 and transition. What stopped you from transition earlier and do u regret it?

Edit: thank you all for your comments… i really appreciate you sharing and i think i don’t want to waste away my life being someone I’m not. This time doesn’t come back and youve helped me realise that. I understand everyone takes their own journey and it’s not wrong to transition later in life but thank you for helping me to decide to do it earlier