That's why most martial (melee) characters end up getting 2, and some, like fighters even 3 attack actions per turn. So they can do a shove and a regular attack in the same round in 5e.
I think this was done to reduce the amount of "currency" that players use. In a pen & paper RPG these can be made on the fly, including whereas in a video game you need to streamline them as much as possible to make the UX approachable.
