> But having only one secure login helps keep things simple(r) 1. It's not secure / doesn't keep things simpler: If you lose it, or it's get compromised, you'r

> But having only one secure login helps keep things simple(r) 1. It's not secure / doesn't keep things simpler: If you lose it, or it's get compromised, you're screwed on all your Windows machines, not just one. 2. It doesn't keep things simpler: If you lose it, or it's get compromised, you depend on Microsoft to access all of your Windows machines, not just one. 3. It's not "one login", unless Microsoft has gotten control over all websites, banks, ATMs, mobile phone apps and so on. It's just n-1 or n-2 sets of credentials instead of n. 4. Microsoft controls the authentication, so one could argue it's not secure. --- > mobile platforms, which have been pretty well-secured from the get-go Not sure how you figure that. More like the opposite.