Even if Debian wasn't perfect before systemd was introduced, at least I knew there was a very high probability that I could trust it to function well.
That stopped being the case after systemd was introduced. I've had far too many problems caused by systemd, to the point where all trust I had in newer versions of Debian has been lost.
Initially, I thought that maybe the problem was with me. But as I investigated the issues I was having with systemd, I'd see so many other bug reports, forum postings, mailing list postings, IRC logs, blog articles, and other online communications from people who were also having many other problems with systemd.
Debian offered a much better user experience before it switched to systemd, and a much worse user experience since.