Just reflecting a little due to the subject...
Nearly 44 years ago now, when I was 10 years old, I first got interested in photography when I saw the magic of a neighbor's TLR camera. I immediately took my meager allowance and paper route money and bought my first cheap camera. By age 18, I'd read everything in the local library on photography that they had, plus books on composition, art, and other associated subjects, had taken all the photos my limited funds would allow given the cost of film and developing, and bought my first SLR, a used Nikon F.
Nearly 36 years of continued learning and practice and gear acquisitions later (I'll be 54 in 2 months), I consider myself fairly competent when it comes to photography knowledge and experience. Over those many years, I've explored many genres, styles and techniques, learned much along the way, and continue to do so. It has been a lifelong interest, love and passion for me.
I've also turned down literally dozens of requests to shoot weddings over that same period. I've never shot one, and have no intention of shooting one. It's where I personally draw the line for myself. I simply tell them that I appreciate the offer, but that wedding photography is a very specialized kind of work, and I'm not a wedding photographer, so I must decline. To me, it's just that simple.
I draw that line for myself because I have no actual experience with that genre and haven't sought out the necessary experience through being assistant/second shooter to one who actually has the experience, which I wholeheartedly believe it takes. I think wedding photography is one of the few unforgiving "get it right the first time - there's no second chance" situations one can have with a camera, and I'm not willing to take any chances with that singularly special day for any couple looking to document it in a way that leaves no photographic regrets.
I honestly think I could pull it off, but since I can't guarantee it, no couple will ever be my guinea pigs to find out.
But that's just my take on it...