Each one will be slightly different pros and cons... and each user will have likes and dislikes for each one.. There really is no "get current with what everyone is comfortable with using".. What are YOU comfortable using?.. If you're happy with your current email client, you've done the research regarding your email client and it's as safe as others, then why change? There's really no reason to jump to something else simply because "it's there".. We've had complaints on these forums regarding outlook.com, and we've had complaints here about other types as well..
It's up to you.
Hope this helps.
Grif
I am confused by outlook.com, gmail.com? Is outlook.com an email service like gmail.com? Is outlook.com the most used email service? I have been using a professional software that is not widely used and I want to get current with what everyone is comfortable with using. Any input would be appreciated? Thank you in advance.

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