The side effects of regular use is well documented, paranoia, depression, etc. Years of regular use makes a person very moody, producing a couldn't care less attitude, giving problems within their personal life.
That's a load of stereotypical hogwash.
I've been smoking pot for 20 years. I'm a successful professional, have a great marriage, stay active in my hobbies (fly fishing), get out regularly and excercise with the dog, and am, for the most part very healthy and happy. The ONLY negative side effect that I have noticed is slightly higher grocery bills.
To say that prolonged use of pot makes people "moody", "producing a couldn't-care-less attitude, giving problems within their personal life" is nothing more than an uneducated speculation.
There have been extended periods of time where I have gone without smoking pot, more than anything to prove to myself that I wasn't addicted to it. I never noticed any beneficial changes, physically, emotionally, or mentally that resulted from taking these breaks. I am definitely not moody. I have a pretty focused attitude when it comes to my duties & responsibilities, & my personal life has never been better.
So put that in your pipe & smoke it.