Re: I'm Leaving Aikido
I don't think my Sensei would object, but if I were talking to a potential student who stated their main goal was as yours, I would not encourage Aikido. Sorry I wasn't the person you talked to before starting, because it would have saved you the time.
Yours is not the kind of job I'd want to have. Luckily, I only have to be concerned with the much lesser chance of being attacked by a stranger on the street. Although, as an auditor, I suppose threats may be forthcoming. For that reason, I train with and carry a gun. But I know that isn't an option in the UK. I also sure as heck don't do Tai Chi to be able to protect myself.
Good luck and stay safe,