For someone like me, who will be in need of a LOT of icons as projects move on, it will save you a lot of work and time. You can focus on other things, like making icons for those who can't do it themselves, working on quests of your own, and most importantly... playing HeroQuest!
I've already tested out a large room icon and it worked out well. Just need to simplify it some to keep the file size down. For me, that seems to be the trickiest part. Keeping them simple, yet appearing detailed enough to be recognisable.
...because you're worth it!