Many of our favourite houseplants are actually vines. They look great trailing but will really flourish if allowed to climb. Many of them develop larger leaves and get classic fenestrations as they mature. Which plants benefit? Monsteras, Pothos, Rhaphidophoras, Philodendrons, Hoyas, Syngoniums. In nature they would climb trees. Adding a pole gives your plant the support structure to climb and mature. It can also rein in your plant's sprawling wingspan, allowing you to direct its growth upwards in a column.
There are a great many options available and each come with their own pros and cons.