It's not just you. The idea for plugins as a means of extension is a valuable one, however, most of the plugins available are there to make up for a deficiency or a perceived deficiency in Firefox's design and implementation.
Something like AdBlock plus is a fine example of what a plugin would ideally offer. In Safari I rarely missed plugins, save for the example I just gave of ad blocking.
I sincerely hope Google put together a good browser, but they have some way to go. I'll be very interested to see how the Mac version shapes up, for if it looks anything like the Windows version currently in Beta, it might just be a complete write-off.
The comic describing Chrome started off shakily but got better as it went. However what I can see in screen shots of the beta leave me sorely disappointed and quite revolted. I want a native looking application with the benefits that native development bring. Not something that looks like it was created IN a web page.