I know that Pat Volkerding didn't include PAM back in the day when it was considered by some to be messy or inconsistent, although that doesn't really seem to be the case today with PAM being standardized accross distributions.
What are the reasons for Slackware not including PAM in recent versions of Slackware?
Are there any other distributions that abstain from incorporating PAM?
Best Answer
Yes there are other distros, mainly those which keep KISS principle. PAM is over-complicated, people use it even they do know how it works. Then little typo/error makes security issue.
Check http://crux.nu/Main/About which is nice KISS clean Linux distro.