Should I try and write a book?

Yes, you definitely should! 

I started writing my first novel a little over a year ago and the rough draft was an absolute disaster, and you should expect the same, but don't get discouraged. Writing a book is truly amazing, it's very beneficial to mental health and gives a great sense of responsibility. It likely won't start off very good, but you will progress over time and I wish the best of luck to you. Keep in mind that it can be very stressful sometimes when you try to do things like NaNoWriMo, or if you really want to write, but you have no motivation, but don't beat yourself up about it. Writing is very hard, but very rewarding. 

No matter what anyone else tells you, keep in mind that this is your project, you make the rules. Some people will tell you that you absolutely have to have an outline, but that isn't entirely true. Use an outline only if you want to. Write what you want, how you want, when you want because you can give your own self better advice than anyone else.

I don't understand why you feel you need the approval and permission of complete strangers to do something that is both legal and harmless!

If you want to write, nobody is stopping you except yourself. 

Just start writing. Make notes if you want to kind of sketch out the idea you have. But just go ahead and write. There's no reason not to try.

It can't hurt to try, just don't expect your first effort to be brilliant. To get good at something, you have to be willing to be not so good at it first. I guarantee you'll learn a whole lot about writing books from trying.

And in a year or two, if you still like the concept but now see ways to write it better, you can write a new draft using all that you learned.

I urge you to have a detailed master plan written out before you start. Writing without knowing what comes next hugely increases the odds of failure, and of course you want to set yourself up for success.

Yes! Dive in, and you will know more about what you can do

Why not make it MUCH easier on you by starting with a short story first?

I was just about to say go for it no harm in trying but Amy Beater beat me to it. Listen to her. 

Yes! Do it. You only get one life :)

Yes, definitely.  If you need help, I'm available.

The Master of Perception: http://tiolibooks.com/cgi-bin/blog

Catch a Falling Star: http://tiolibooks.com/blank_1.html