The joy of a designer

Yes, you are a happiness maker
It's very happy to think that you are the happiness maker. When you a game designer, you didn't design it for yourself, you did it for your audience. When a game released, you're hunger to see the feedback to your game. If it a positive feedback, you can enjoy yourself for awhile. If it a negative feedback, then you have to point out the problem.

This is the picture of 2 people enjoy my game. I'm feel proud and happy when i looked at that picture.

When you worked in game industry, it's the number of user and profit is the most important. That's easy to understand, without money you can't make any game. And all the features must increase something, user's loyalty, user paying, retention rate.... If you want to add any feature to serve your user, you have to explain to boss and the whole team why it's important and why it's worth to add. If you can't find the good reason, that's not gonna be happen. The feature that gave profit only for the user but not the team is consider wasting resource to do something unprofitable. So if you want to make something improve player experience make it silently and with profit in mind.
Game designer is actually a hard working job. you will work 24/24 and note everything. With a lot of pressure that will break you down. Remembering you are the happiness maker will help you continue your work with more motivation.
Game as a service to solve people needs
Ofcouse game is about entertainment, it's is one type of people needs. But let me make it more detail.
When you met someone for the coffee, the waiter can't bring your coffee for awhile. Let play a short simple game for warm up the meeting. That can make you and your friend have some funny game after work. That's why i design Game For Two (offline version). To solve some short boring period.link
After work, there are two kinds of of activity you want to enjoy: entertainment or relax. If you want entertainment play some exciting game with real time exciting gameplay like dota, League of Legend or Counterstrike.... If you want relax there some puzzle game with lower speed and you got time to make interesting decision. Someone want to enjoy beautiful story, there some japan title as Solid Snake or Final Fantasy could satisfy you.
You're the social type? there a lot of social game with rich social activity like Farmville and Clash of Clan make your activity with your friend more meaningful.
Personally I think game enrich people live a lot.

Game as a art
Game has everything that other art have. A lot of people call it an art of interaction. As other art, game designers have to spend a lot of their time for training. It require skill, imagination, knowledge to craft such a beautiful game and a lot of people to plan, make and market it to the world. Each game have its own fan. It's a mix of other kind of art : music, painting...