Fishing is fun. Choosing gear is hard. You can get to the fun part faster by buying a fishing rod and reel combo, which takes all the guesswork out of matching a rod to a reel. This is important, because if the reel you pick is too heavy for your rod, our outfit will be less comfortable to use. A poorly balanced rod and reel won't cast as far, either, and makes it harder to detect bites.
Rod and reel combos, which are matched by the manufacturer, solve this problem because both rod and reel accept the same strength and diameter of line and cast the same weight lure or bait. Pick the right size combo for the fish you want to catch and you can save time on research and make sure you won't get a setup that doesn't feel right when you're out on the water.