That's one (arrogant) way to look at it.
I agree.
I'd it depends on many factors...
--How much screen real estate do you have
--How good is your eye sight
--How many applications do you typically have open
--How many logical groups of applications do you have open
I figured I'd love spaces, since I was a fan of virtual desktops on Linux. But, to me, Expose' removed my need/desire for virtual desktops.
For me, the whole reason for virtual desktops in the first place was to make up for the completely retarded method of managing windows in Windows and Linux (well, and everything). More a lack of management than stupid management...
Anyway, it didn't take too many open windows before managing them yourself was a nightmare. Enter virtual desktops. Now I know that app X is in desktop y and all of a sudden things are tolerable. Tolerable not good.
Then I try a mac out on a whim and basically /mindblown with Expose'. Being able to kick it off with a hot corner (no gestures at the time) made it that much more awesome. I forgot completely about virtual desktops. Expose' was one of those "why isn't everyone doing this???" feature for me.
Then when "spaces" came out, I figured I'd give it a shot. I mean, more control can't be worse I figured. But, it turns out I just didn't care for it. My problem was that a single app could fall into multiple groups and thus multiple spaces... (e.g. API docs in one browser window and my screwing around websites in another) but I didn't like how that was handled. It turned alt-tab in to a crapshoot once you split an app across spaces. So I found myself using different browsers for different purposes... which just seemed silly. What would have made spaces useable for my purposes... was if I was running multiple instances of a particular app. i.e. I could run Safari once for my news and what not and another instance of Safari (that would show up separately in alt-tab) for my API use. But that wouldn't be ideal for many people especially since you wouldn't be able to tell on alt-tab which Safari is which. (Though, I'd be able to since I subconsciously keep track of what I had in focus last and that's how alt-tab sorts things.)
So I just went back to straight Expose'. It's always worked great for me anyhow. My use of spaces was really just a solution looking for a problem.
Anyway, as I'm sure someone else has pointed out... mission control wouldn't be so horrible if it weren't for the app grouping... That actually really annoys me. In the same way that Windows people said they had something like Expose' and it turned out it stacked all the windows on top of each other making it an exercise in uselessness. And the app grouping wouldn't be so horrible if they would take the whole three finger upswipe a step further... instead of the lame barely separating the app's windows, if it would take me into "application's windows" expose'... and I could swipe back down to re-enter mission control... I'd be mostly fine with things as they are.
Granted, grid style spaces makes way more sense if you're actually using spaces... but for me it's not much of an issue as I tend to not really use spaces for the reason mentioned above.
Anyway, I preferred the old style of doing things and wish they'd leave that available even if it's not the default setting. Mission control was a step backward for me.