I've been using the Droid now since launch weekend, and keep in mind I've had each version of the iPhone on launch day, and all of my personal computers are Macs. At first I was "so-so" about the Droid, and wasn't all that thrilled with it. But what I've found is that once you've used a certain device for so long (in my case, iPhone since 2007), ANY device you change to is going to seem different and unfamiliar, just because you're not used to it. After forcing myself to use the Droid exclusively, I've found out that I like it more than I did any iPhone so far. I like a device that isn't so "dumbed down", and that has more options and "openness" if you choose to use it. The Droid is faster at displaying webpages for me, even when I'm sitting in an area of AT&T 3G coverage that is testing out at over 2000kbps download speed, and the Droid is WORLDS faster at uploading (iPhone is hardware limited to 384kbps upload, and the Droid will reach over 1000kbps upload). Every app that I've actually used with any consistency on the iPhone is available on the Droid, and the only thing that's not on par with the iPhone is gaming, but I don't do that on a phone anyway. Especially not the iPhone, the controls cover half the screen. And once more elaborate games come out for the Droid, you'll be able to slide the keyboard out and use that as controls, not obscuring your screen. And speaking of the screen, once you use the higher resolution Droid for a while, looking back at the iPhone/Touch makes the lower resolution extremely noticeable(and crappy), especially on webpages. The default on-screen keyboard for the Droid isn't bad, but I'd recommend downloading "better keyboard" from the Market. It is leaps and bounds above even the iPhone's onscreen keyboard. And after using the slide out keyboard for a while, it's actually pretty useful once you get used to it, and it's always a nice feature to have to use when you need a hard keyboard (doesn't make the phone any thicker than the iPhone). And widgets are extremely useful for pulling down information and having it on your homescreen at a glance, instead of having to open up every one of your commonly used programs just to see updates(weather, calendar, Twitter, and sports scores update right on the homescreen). I've not seen that true multitasking programs shortens battery life significantly, if coded the right way. In fact the Droid, in my experience, gets about 5-6 hours more battery life my iPhone 3GS was getting (it will last all day on one charge, where as my iPhone would have to be charged again before I left work for the day). And as far as the Droid not being compatible with Mac/OSX, the only things you can sync to/from a Mac to iPhone are email, music, contacts, and calendar. And of these, email, contacts, and calendar can be synced with Google/Gmail on the Droid, which can also be synced with your Apple computers, so this is a non-issue for me. And music/media can just be dragged and dropped, so it's not that big of a deal to do that either. You could always just carry an iPod shuffle or Nano for music, which is what I did with my iPhone, because listening to music for lengths of time at work killed my already short-life iPhone battery even faster.
Don't get me wrong, I love the hardware of the 3GS(essentially the same hardware as inside the Droid), but I'm just tired of Apple thinking everyone is an idiot, and making phones that can only be used how they think it should be used. Now, I agree that overall, this locked down policy of Apple's makes the user experience better for the majority of users, because it reduces user related error, but I'd at least like the CHOICE to do with my hardware as I wish, without having to play cat and mouse games with Apple just to jailbreak my own phone. The iPhone/iPod ecosystem is going to be one major drawback to not using an Apple device, however. With the vast amount of them out in the public, you're always going to find more accessories/cases/etc for an iPhone than you will the Droid (for now), as well as the interoperability with the iPod dock connector.