We no longer need to change the time twice a year. If we are going to stick with one time we should stick with Day Light Savings time.
Staying with DST allows it to still be light outside when we get off work to be able to do things with our families, projects around the house, sports games/practices and many other activities.
Also there are businesses that will benefit from it staying lighter later such as Real Estate where they are able to show homes to clients in the light and not the dark when most people are getting off of work.
Having it dark before 5pm when most people get off of work has shown to cause depression