 So stretching what is the big deal and do you need to do it?
The question should really be, do you want to stay active and mobile, if the answer is yes then you should really be stretching, not only does it keep you supple, but also lengthens your muscles so they not only look and feel better, but if you lift weights you should be stretching as it is this that enables you muscles to grow properly.
Not to mention it will help no end with your flexibility and mobility, there are a variety of different stretches...
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Moderation! Balance! Consistency! How do you know what is enough or not? 
We all look for it, but where do we truly find that freedom? That all depends on what it means to you individually i guess.
So you want to lift weights, but do not want to look like a bodybuilder. If i had a pound for every time i heard this (would have quite a few pounds by now)
Have you ever really asked yourself this question? Do you really know the answer, deep down? It is a difficult question to answer, honestly and truly. Are you the person you think you are? Do other people see you as the person that you believe yourself to be?