It's slightly annoying for a week or two, then your brain blocks it out and you don't even notice it. I enjoy wearing one, a visible sign of the marriage. I find myself fiddling with it on occasion and smile, reminds me of the wife in a context that I wouldn't have thought of her otherwise.
I have a yellow gold and platinum mokume gane ring. It's a woodgrain pattern, fairly subtle. I wanted something different and settled on this. 6mm width, could have gone wider and I certainly wouldn't go narrower.
I don't really see why people worry about weight, one of the selling points for titanium is the lightness. Even gold or platinum is only a few ounces, and it's right at the base of your finger. You really don't notice the weight at all. Nothing wrong with titanium, just find them a bit pedestrian. Gold has been the classic for jewelry for millenia for a reason.
Platinum is pretty reasonably priced compared to gold these days. You can beat it up pretty good too.