I was looking to replace a couple of std fixtures in the house when I noticed these. I was quite puzzled at first on the "how" of installing these. I think I've figured that out but my question is 'why'? Seems like 1 type fits inside a pot light housing with a wire and a fitting that screws into the socket where a bulb is normally installed. Given that one can buy LED floodlight bulbs, what's the advantage of using these? I am guessing long life---supposedly 45 years. I'm a senior and don't expect to live that long. For the younger folks, do you really expect to be in that house for 45 yrs? The second type that I saw seemed to be a replacement for normal ceiling fixtures. It looks like I would need to remove the junction box so I can push the housing fixture into the ceiling so that it is flush mounted. I guess I can see where that would be a sleer look so that it's similar to a pot light with no fixture hanging down. Otherwise, I don't see any advantage. Comments? TIA