Printing is a moot point since Android has no native print service, and Google's CloudPrint is designed for its Chrome OS devices, not Android. Plus, in most cases, it makes you leave your PC or Mac on to act as the waystation. The workarounds available in the Google Play market force contortions such as opening documents in the apps before printing, which restricts you to specific file types at best. Some of Motorola Mobility's Android devices have a usable printing (and video streaming) capability built in, but not others.
Bonjour networking isn't the only Apple technology closed off to Android. If you bring Android into your Apple mix, you won't be able to use the FaceTime videocalling app -- it works only on OS X and iOS devices, not even PCs. And you won't be able to use the iMessage chat service that lets you avoid carrier SMS fees -- it too is limited to OS X and iOS devices, though iMessage users will work with Android's SMS services, as it does with any device's SMS.
If you want cross-platform videocalling and free chat services, you'll need to use third-party services such as Microsoft's Skype or Google's GoogleTalk that work across multiple platforms.
Still, when all is said and done, you can get an Android smartphone to join in much of the Apple ecosystem, if you're willing to spend $20 or so in helper apps and purchase the Android equivalents to your paid iOS apps. That's not such a high price to pay to have your Apple ecosystems and Android device, too.
Sign up for Computerworld eNewsletters.