Alabama executed someone with nitrogen in 2024 (I know other states have as well, but this was the first one I remember reading about), it doesn’t seem as quick and painless as one is lead to believe in writing.

https://www.bbc.com/news/world-us-canada-68085513

A witness told the BBC that Smith thrashed violently on the gurney and the execution took around 25 minutes. … “I’ve been to four previous executions and I’ve never seen a condemned inmate thrash in the way that Kenneth Smith reacted to the nitrogen gas,” Lee Hedgepeth told the BBC’s Newsday programme.

There’s a lot of reasons people have already mentioned, but I’ll add this.

Your applying logic and reasoning to people who are illogical and unreasonable…