Currently, I have it off because I do like reading the tips though that gets quite repetitive after awhile. However, the next time I play I might turn it back on because I do like looking at the screenshots while I wait and I do appreciate the set up in getting said screenshot and find it quite inspiring actually. Also, TS3 videos made by the team are really fun and interesting to watch too and again I can appreciate the effort and creativity that went into it. Actually, that's a part of the reason of what got me even more excited about EP's/SP's/Store Content or the game in general.
https://www.youtube.com/watch?v=L4FxE3t-7Aw
And to me, the Generations trailer is how I view The Sims as the core and is why I like the game so much. Especially, after what TS2 introduced to the series and TS3 made it even better to me. Though, always room for improvement but well...not ever I guess which is unfortunate.
https://www.youtube.com/watch?v=4hajq1nwsAM
Oh, and my load times are already kind of long because it's a long running save with a lot of Sims who I had been playing for real life years so I don't really care. The same with saving, it takes some extra time but I usually take it as a reminder to get up to stretch and walk around for a bit.