I've recently used CPanel on the admin side for the first time and have to say I hate it.  Everything from the layout to the functionality screams "hackish".  It just lacks so many common sense features and way of working.

I was never 100% impressed with Plesk but the basics were definitely laid out and done in a sensible manner, even though it is made by a Russian company, they definitely thought about how to make a Control Panel.

I have no idea why people like CPanel, it's even more bloated and inefficient than Plesk.

Another thing is why is there no shared SSL?

People just say use "https://host/~username", well that doesn't cut it.  Plesk has true shared SSL and does not require a dedicated IP/SSL certificate.  It took me long enough to find out that CPanel doesn't really have shared SSL at all.

What if you host in a country where IPs are limited/expensive?  CPanel really expects you to have a dedicated IP just to secure your admin login etc...?

CPanel is just extremely dated and I have no idea why anyone likes it.  When I first logged in I really thought that I had an old version of CPanel.