Although, some months ago, Hotmail.com merged with Outlook, this service has not deteriorated in any way, but it has improved. Besides, your Hotmail.com account will operate forever and without any problems, and if you like the extension @hotmail.com, neither will be a problem since they are offering on the web.
Another change that Hotmail.com has suffered in recent months, has been the disappearance of Messenger to integrate with Skype. Although, this may have been uncomfortable for many users accustomed to the old platform, the fact is that Skype works better in every way, and it is thus possible to have all your Skype contacts and Hotmail.com in one account.
Hopefully Hotmail will continue making improvements as usual, because in such a competitive market as is email, whom are not renewed, are doomed to die, as happened with Yahoo´s email (a few years ago were widely used but nowadays it is rare to meet someone who use it).