I got into DMing a few years ago, and I've never looked back. Currently, I have a 2 1/2 year long game running. I like verisimilitude more than most, because I find inconsistencies are very easy to notice and very annoying to just accept without mention. However, I understand this is not the case with a huge portion of the available player-base, so I do my best to be flexible about it. I mostly desire in-world consistency. This means that things need to be handled consistently so that cause and effect are predictable enough to allow decisions to carry more weight.