Birds are very challenging pets and I'm happy to hear that you're giving this decision the serious thought it deserves. The birds thank you, too!
I've never had a dog, but they seem pretty high maintenance pets, too. I see people walking their dogs out there in the dark in the coldest months of winter in Maine and I know I wouldn't want to do that! But dogs must be walked and I give their owners a lot of credit for braving the elements. Cats seem comparatively easy. Face it. All animals have inconvenient needs. Birds are just harder for most people to understand. They're unpredictable, destructive, messy, sometimes act like wild animals, and are much harder to find good "sitters" for if you want to go on a vacation.