There's bloatware out there but for the flagship Android phones typically it's not so bad that it makes the phone unusable for the average user. iOS does not enjoy as big of an advantage in UI/UX as it used to, which is phones like the Nexus 5/6, HTC One, and S5 have decent market share.

Then when you get into cloud services (Gmail, Maps, Google Now, etc.) Android has a clear advantage. So depending on what parts of the smartphone experience a user prioritizes, a logical argument can be made for either platform.