HA HAAAAA! I'm laughing out loud here at this post as it's exactly my situation.
I've been working in the design industry for 17 years now. I once had a signage company with several employees and I bloody hated it! I left in 2010 and have been working from home as a designer to pay the bills. I always wanted to get into films and started acting etc as a hobby. Anytime I got a short film acting part, I found myself more into the technical filming side rather than the acting. I bought Canon 60D 3 years ago with the intention of 'fooling around' with some movies. The strange thing is even though I had no intention of doing photo's I started taking pics for my design work. I got better as a photographer and bought flashes etc. I even ended up getting into a little glamour photography and doing fashion and jewellery shoots too. I even do food shoots the odd time.
Today I have a BMPC 4k, a BMCC and still have the DSLR as well as other photography and film-making gear. The film side of things has taken over. The way I've got film work is through my existing clients from my design work. I've had loyal clients for years and when I started making movies they stuck by me. So far this year over 50% of my business has been from movies. I fill 'the gaps' with design work and still do some photography. My intention is to become a full time film maker. Sound editing has been a hobby for years (Logic etc) so I like that side of things too.
I disagree with what some people above said about doing work for free. That's just cheapening the trade and yourself. By all means do free work for a charity or friend or whatever but doing free work for a big organisation who'll benefit from the vid is nuts in my opinion.
I wouldn't be interested in doing weddings personally as it's too 'gun and run' for me and I'd be worried about capturing the action but go for it and take a chance on it if you think it'll be of interest to you. Some people said your first wedding will 'suck' and that it may not be good. How do you know? Have you seen the standard of wedding vids out there? Where I'm from the standard is pretty average.
Get your showreel sorted, and a website etc and most importantly go out there and call to doors!
Huey