I have more than one gmail account. Name changes, personal vs business .. some are now just forwarded to active accounts because now and then something comes in that got overlooked in changing from one ID to the other. I have Mail configured to download so I don't care about push to the desktop. No limit on storage for all practical purposes and very easy to find an old message. Two factor authentication for security. Google Voice for a free phone number with forwarding via text message. Check it securely from anywhere, easy to check multiple accounts. Seems the main issue is "they look at your stuff". I use the Mail client for 99% of mail reading, so I see no ads, and the ones I do see online I ignore ... you want to worry, go look for your name on one of these sites like Spokeo. Go on, look now. You probably saw your name, address, age, other people in your household, all kinds of information you don't want advertised, and that was for free. Pay the $30 or whatever for even more details on anyone in the database without their permission.
I had a .me account that Apple killed, I hate that I got locked into an AppleID that I can't change, my yahoo ID got migrated to hotmail and probably they'll make me change it again ... through all this change Gmail has chugged right along, losing no email, forcing no changes, and being free. Would have to be a real compelling benefit for me to give it up, and I haven't seen that. Am I missing something here?