Oh man, outlook? Mostly just because I hate email. Or slack because I hate people being able to just grab my attention from what I'm working on.
Right now, I'm getting super fed up with SCVMM. I'm used to vcenter and having to migrate everything last minute to hyper-v keeps showing me why I've always gone VMware for everything. It's just a clunky, unoptimized UI, giving me cryptic errors with surprisingly little online documentation. I feel like Microsoft really, really could do better but they don't want an alternative to Azure so they make it intentionally hard. It's just unoptimized software with too much overhead for a hypervisor.
Getting this deployed and configured is a battle of two steps forward and one step backwards.
I just came off 15 years at Outlook companies to a Google everything office and I love not having Outlook for any reason. It's so nice. Just hearing the alert noise would raise my blood pressure after awhile.