You certainly can. Plenty of people still do. It's hard to build in an interactive user interface when you have to wait for full page loads to complete between

You certainly can. Plenty of people still do. It's hard to build in an interactive user interface when you have to wait for full page loads to complete between actions. It can be done with thoughtful planning, but sooner or letter that JS you sprinkle in to do view manipulation is going to be unwieldy.