That makes sense! I've only really felt this way for maybe a year or two and only decided the date about a month ago. I'll give it more time.
See like with me, I knew about 30 years ago, my last "how the hell did I survive?" was in 2000, my next will be in 2020... so I've technically given this one 20 years for things to change. With 3 months to plan my original, then pushed back due to things I didn't realize.
I'm not saying that people might not know quickly that it's the right choice as there are times where they might find out something, and realize "yep, time to go" that day. But I've had decades to process things, and I'm at peace knowing what I'll do. I've always known. I was just waiting for a time where I had everything I could completely wrapped up. And sadly, the only times I've ever been happy are when I thought I'd be dead.--at least by my own hand.
Everyone's different, only you will know what the best choice is for you. But I too believe that if you have hesitations, doubts, concerns, you should address them first. You may even discover that the ctb isn't even what you want after.
But again, choice is yours.