Yes, I have a pair of them; first bought in 2015 and second bought in 2017 as a second body portrait combo. I often shoot my commissions in color and black & white; I prefer to set up a camera body & lens combo for each.

My experience is that it’s a relatively heavy, noisy, and ugly big lens... and I absolutely love it. It’s the only 50mm lens I will ever need, and at f/1.2 on a 5D MkIV body, I can shoot effectively at light levels so low I can’t see well enough to manually focus. It adds something to my photographs that no other lens does; I have some examples in other sections of this forum that explain this better than I can here.

It’s an “L” series lens; I suggest that you consider L = Learn to use it well? I’ve actually had fellow photographers (professionals) tell me that they couldn’t get used to the lens, or couldn’t get it to work properly for them. I’ve had no problems at all with either of mine, but because of it’s designed capabilities, this lens requires the photographer to set up their camera correctly and (most importantly) to use good operating technique when shooting with the lens wide open.

This lens dates to 2007. I don't mean the new ones are that old, just that they make them in batches rather than new ones every day. I have one I bought used and it's one of my favorite lenses. The AF is perfect and fast and I've never had the slightest issue. The Canon Refurbished shop shows one, and a price around $1000 or less (if you kind find one used) is a better price for this high quality lens.

https://shop.usa.canon.com/shop/en/catalog/ef-50mm-f-12l-usm-refurbished

The lens is rather artistic, especially at f/2 through the maximum f/1.2 aperture. As you get to smaller apertures, from f/4 onward, the differences between Canon's other two 50mm lenses become difficult to distinguish.