That's the whole point of rp is to be emersive. This is a serious rp community. im shocked to hear this from you because you have always been a phenomenal rper from the times I've met you in game.
Which perhaps indicates something? Perhaps it means that even people who apparently are phenomenal RPers simply prefer the mod over SA because the dislike SA or like the mod more?
Why does EVERYONE haves to like what you like? Why does EVERYONE needs to have the same opinion about it as the SA-lovers?
Immersion is a pretty funny and vague term. Only because something makes RP more immersive for you, it does not mean it does that for everyone or adds to the joy people experience during the game.
Some people f.e. say that forced 1st Person makes stuff more immersive.
More realistic? Sure. More immersive? Not for me, for me it simply makes everything annoying and restricted and i can have the 3rd person view on the events my character experiences.
There are many people and all define "Immersion" different. And for me, immersion mainly consists out of excellent character/role play. And that is was the point of RP is in my opinion. To play your role, you character.
I do not need an super realistic environment for that. I remember situations where i stood on Altar for a whole Ingame night, just talking and discussing, all with excellent Roleplayers.
And it was more immersive than anything i have seen in SA so far, despite all the nice realistic features (I still wonder why people both, in the mod and SA need to eat like 200 cans of pasta per day...)
As Zhunk said, realism does not mean good RP or fun.
It is not real life, characters don't exist 24/7, if we talk about realism then everything in the game makes no sense at all. It will never be "realistic", and it doesn't needs to be for good Roleplay.
Maybe the mod was less realistic than SA, yet i the best RP experiences i had came from there.
As i mentioned so often before: There is nothing wrong with people playing SA, a lot of people LOVE it and don't want anything else. That does not mean that its perfect and everyone loves it...
All my thoughts are summed up in this excellent comment, well done Anacalgon! I think everyone should read this.