Oh I also do that at times..when a leaf falls off due to the winds..so impromptu propagation.
Sometimes one just have to grow them, to truly understand if it is the type of succulent you wish to have around..some are so hard to tame..if it won't be tamed..I just let them do what it wants..and if I cannot stand it anymore..chopping block it goes..then I get new little ones to grow
I am bad with seeds...so I do not attempt anymore..I have better chances with cuttings.
When I have a succulent that blooms and I know its ID, I try to research again if it is the type that goes monocarpic or not....so if I cannot get the seeds..I can attempt to get some leaves or rosettes to try and root.