Ok i still have a question here.?

if you read my previous questions you'll know that im having thoughts about why do we feel emotion at all. then all the sudden i realized that we cant be completely emotionless. and even the most serious depression patient can be distracted somehow. this temporarily stopped the question. then again i came up with another horrible idea after i got back from my first day at work: if we can just simply thinking things and feel emotion then why do we have to go out and do things to have fun? why do we need money? why do we need vegas? why do we need to eat to feel happy. even the most starving person can somehow feel happy too then why do we need to eat? we all gonna die anyways. i really want this thoughts to stop so i can once again enjoy life and become that funny, , anti-authority, trigger-happy when it comes to quarrel individual like i used to be. can someone either answer those questions or provide a good way to get me outta these thoughts without having these thoughts interupt my activities (for example, if i go out excercise i would be like "why do we need excercise when we can just imaging excersise).