I never liked Outlook, just seemed like another bloated, clunky MS app. Back in the pre-webmail days I used Eudora, now I use Gmail because it’s easy to set up multiple addresses. Whenever I go to a website I know is going to spam me, or have to sign up for something I use a Gmail address that acts like a spam dumping ground. This leaves my main emails fairly clean.
That’s fine, but you can usually do the same with your ISP (create multiple email accounts) and set rules to filter however you want, Outlook has so many more options than gmail.
Outlook used to be a little on the bloated side but I do not consider it anywhere near bloated status with the last few versions. It’s fast, fairly small footprint and unlimited in its power. It’s actually one of Microsoft’s best products. If you want bloat see Lotus Notes.
gmail is simple to use but lacks the power and depth of Outlook. I also find it faster and easier to do work with Outlook than through the gmail interface - so much so that I pull all my gmail into Outlook.
I didn’t like Outlook and like someone else said, I don’t trust google with anything.