Simulator 'people' have always been anally retentive from what I have seen. (the Ubi-forums were full of people who would fall on you like starving vultures if you dared to make a negative comment about their beloved sim, and those people are singularly the reason I went off that particular Sim
Personally, I think CFS3 was a good simulator to use for OFF (hell, I am no fan of vanilla CFS3..I've made that quite clear in previous posts)...But without having a dedicated engine, there are no other simulators around that I can think of, that would have allowed such a diverse variety of Scenery etc to play with, and although I like MP.... It isn't what flying is all about for me.
CFS3 is poor for multiplayer yes..we can all agree on that..... and it looks like ROF is going to be poor for Singleplayer. (for reasons that have been gone over time and again)