I know what you mean. Some things just flow better because of the increased resistance. We all get "used" to the light action of the synths, but if you're true to your feelings, you have to admit that the dynamics are easier to reproduce with a wooden hammer action key.
Of course, this applies mostly to rhythm players, like myself. I grew up playing the bass lines on a synth and the chords/rhythm on a piano/rhodes type action. It's much different than just playing melodies and triggering chords. My entire approach to arranger keyboards is one of "rhythm first". I need to play the entire "feel" with my right hand, sing the melody, and let the machine just fill in the gingerbread. Sometimes, I Play the bass, sometimes I let the machine play it, but I ALWAYS play the chord structure and primary rhthmic groove with MY hands. The arranger machine is just the icing .... if I use it at all.

As a singer, I need to establish the communication between the rhythm section and the vocals as priority #1. The rest is all fluff. If the "band" follows along and accents the singer with interactive play, then the result is very nice. If the machine just runs on auto pilot and I sing over the top of the arrangment, then I get Sooooo bored Sooooo fast ..... it just looses the entire feel I was going for.

In short - The rhythm is the "thing". Shakespere paraphrased that, I think - but the general meaning is the same. It's the ensemble that sells the act. Each part needs to act & REact together ... like a conversation. When all the pieces fit - it's a thing of beauty !

It all starts with the beat, wether it comes from a voice or an instrument. Take Ravel's Bolero (featured in the movie "10" with Dudley Moore) it's all the SAME theme, but each time it's played .... the energy increases. They keep adding instruments one, by one, by one, till the exciting climax (?) at the end. No wonder they chose that music for the sex scene!

Gloria said it best:

"The ryhthm is gonna GET ya !"