Fishing in the game is fine by me. It's not something you need to do but if you feel like doing something casual while taking a break from exploring/fighting, it's there for you to do. Cooked fish has the same stats as cooked wolf meat and has been pointed out, you can make fishwraps once you've unlocked the Windmill. According to the teasers from the Dev Team, it looks like you'll be able to mount fish when the Mistlands update drops and there will be more variety. It's just nice to have the option if you want to do it. I'm sure quite a few of you have come across the random fish or two that washed up in a tidal pool that you could grab without a fishing rod. Fun surprise.