TotalColour - me painter
Well, fast drying can be a disadvantage too! Sometimes I like to spend time blending and if it dries too fast . . .not so good. But for me, the main issue is how the colours change when they dry. Acrylics dry darker, so I'm never sure exactly how dark they will end up. Plus, I think oils have much more vibrancy (most acrylics are opaque) - I can get some really gorgeous skies (and water) by layering transparent colours over one another.
I bought some alkyds, because they are a modified oil paint with a polymerized resin so they dry much faster than oils but have the same transparency. But, it feels like you are painting with honey - so if/when I use then, it's just to add to the oils to speed it up a bit. I gave all my acrylics to my SIL, I just was never happy with the results - guess you need to practice with whatever medium one chooses.
If you find your acrylics dry too slowly - do what I do - have 5-6 paintings going on at once!