My friend has a PS3, and I have to admit, I do miss the rumble feature. However, I think I can live without it.
The PS3 reminds me of the Nintendo DS launch. For a while, the DS had a very poor line up of games. Now the DS is the hottest thing out there.
I'm not saying the same is happening to the PS3, but usually a system's launch has pretty mediocre games to begin with. I remember I was disappointed with the 360 cause there were no good games for it at launch. Now, I couldn't be happier with the 360 especially after games like Splinter Cell, Dead Rising, and Rainbow 6 Vegas came out.
Hopefully the PS3 will release some great games in the near future. I don't own one yet, but will definately get one once Gran Turismo 5 and MGS4 come out.
I just hope the PS3 doesn't head the same direction as the PSP.