Amen brother! People on these forums keep talking about waiting for Nehalem updates next year as that will be the "real" update but most people ain't gonna notice a damn difference. The previous Santa Rosa, the current Penryn, the forthcoming Montevina and the future Nehalem MBPs will all load Safari quick enough (is clicking on the dock icon and it coming up more or less "instantly" not good enough for people?) and let you browse the web at the same speed.
Ditto for listening to music, using iWork, iPhoto and most importantly of all, Calculator and TextEdit! Unless you're using your MBP for processor intensive tasks, such as video editing or gaming, it just won't matter. I reckon that most people who own a MBP hardly stretch its processing capabilities at all. They just like the idea of having high specs and the latest technology whether they need it or not; the same for many people who put 4GB in their machines.
I know what you mean. For the majority, it probably won't be that important. However, it totally depends on what you need to do. I maxxed out my iMac so that I have plenty of RAM available for my virtual machines. I almost considered a Mac Pro so that I'd have more than 4GB at my disposal but I know that for now, I can get away with doing my stuff on the iMac and the PCs I still own. I plan to get a Mac Pro next year with at least 10GB RAM so I can clear out my garage of a few PCs. Therefore, I am hoping that by then a redesigned case and new displays are gonna be on sale. No matter if they aren't though.