Should I...Shouldn't I...???

Its 11:45 in the the night and am sitting on my counch reflecting on how the day passed. Work has been quite hectic during the past few days. Typical day starts off by by waking up at around at 6:00 Am and pretty much lazing around in bed for about an hour. I come to senses and the better part of me instructs me to head out to earn my daily morsel. Leave my place by around 8:30 or so with "Hangar 18" playing on my I Pod. Actually feels real good to hear some trash metal in the morning, atleast revitalizes my mornings. Anyways catch the the so called bus ( actually it's a mini van ) and am at my desk by 9:05 or there about. Slouch in my chair and like a trained Labrador start off by typing the username and password.Yep...welcome to my world and probably the world of a lakh and a half It engineers. The universe of bits and bytes encompasses quite a few people these days. Routine work of filling up the time sheet, checking mails, replying to client's requests etc is all a part of work which probably needs to get addressed within the first hour or so. And then , I start off with probably the most mundane and monotonous work of filling up excel sheets tailor made to the someone else's needs. Yes...most've of the time thats exactly what I have been doing. There have been days when you sit and stare at the 17" screen not knowing what the hell your are doing in life. Are you meant to be doing something useful? Is this something that I really want to do? Is this something that will take me ahead in life.? these questions stump me and quite frankly I get most've of the answers in the negative.What does one do with it. Its hard to explain...its hard to break the shackles and go try doing something which is unusual, outlandish and eccentric. infact I have an option of joining a prominent non profit, where I would get to interact with probably the best minds. I yet have to inform my parents regarding this and quite frankly have no idea as to what their response will be. Anyways when I told one of my friends about this, he was so hell bent on talking me out of this...justifying himself by saying that such things are not practical, financial constraints, dip in career opportunities. I on the other hand am quite passionate about what I want to do and really am looking for an opening to get out this routine work of mine adding quality in some aspect or the other. What I plan to do, how i plan to go about , I have absolutely no idea, am one confounded person and the situation is being compounded with the complexities I am entangled in ...I really am hoping that I can make one sane decision which will probably change the way I think and live..! man...i should've probably pursued philosophy over engineering..how muddle headed can a person really be...will probably hit the sack with the thought still looming in my mind and looking forward to a better day and a improved life.