Thoughts?

My only reason is I know I move in my sleep and wouldn’t wanna accidentally suffocate him or crush him until he’s old enough to move on his own like how toddlers do

Adults sleep solo all the time, and it's also very unlikely that accidental suffocation could happen to another adult. It's about safety, not denying companionship.

There are ways to do it safely. Other countries do it. What did cave women do?

I'm not sure the above "what did cave woman do" is the best reasoning because (survivorship bias aside) the infant mortality rates were very high for cave women. I think the thought is that the lack of comfort is made up for in the increased health benefits. We dont want a 40% survive to adulthood rate (that of wolf pups for example) we want 100%. And as adults or even older children the risk of accidentally suffocating our bedmate is very low- but much higher in the case of an infant. We expect babies to sleep alone and with nothing because it's safest for them and any discomfort from lack of companionship/comfort items that could be gained from less safe sleep practices isn't worth their life.

Death from suffocating in unsafe sleeping accidents is not and should not be called SIDS, SIDS is unexplained, suffocating is suffocating

I think the above article was arguing the risk of SIDS deceased 50% plus it also decreased risk of suffocation. It didn't combine them in this article- But YES absolutely! SIDS and infant cosleeping suffocation are definitely two distinct and different things that unfortunately in many statistics often get lumped together. Which is annoying. I also would prefer it said as "safe sleep reduces SIDS *and* safe sleep reduces cosleeping suffocation" to make the distinction clear. I think the thought process between linking them together is that it's sometimes thought that SIDS may be due to breathing in just exhaled air (rebreathing CO2) and the higher carbon dioxide ratio in the new inhaled breath plays a factor like co2 poisoning almost. Which runs very closely to true suffocation and in situations regarding pillows/ blankets what is true suffocation and what could be carbon dioxide influenced SIDS becomes very hard to differentiate.

@Incognito the NIH article states that solo sleeping decreases SIDS rates by 50% but that it is ALSO the best practice to decrease suffocation/strangulation during sleep. It was not saying that SIDS and suffocation are the same thing at all.

It's mostly about safety. I don't recommend co sleeping unless you can do so correctly. I co slept with my first 2. I'm not doing it with my 3rd baby because we are tight in space and I don't want my toddler to accidentally squish him