I like having only one remote with my TV. I get minor anxiety when at other people's houses and they have 3-4 remotes or more, and usually only one person knows what they all do (the one that had to set it all up).
With the Roku stick, you can set up the remote to control TV power and volume. I stuck the TV remote on the back of the TV with velcro so it won't get lost, but in ordinary use the Roku remote is all you need.