Sure it's okay. Everybody has different things which motivate them through life. For some people it's money, for others it's fun and excitement, for others it's family, for others it's something else entirely. There's nothing wrong with being comfortable just to 'be' and having alternative goals - in fact, it's admirable.
If your parents are people motivated by money and success, then it's reasonable that they'll find it difficult to understand at first how a child of theirs might have adopted such different values. But as your parents, your happiness will be most important to them - just live your life the way you want to and your happiness will be self evident.
Yes. Absolutely. Thank you for not just giving into materialism or living to fulfill selfish desires. Please continue on the way you are.
Did you see Warren Buffet's house? He lives in an relatively average home for the amount of money he makes. Read about him and you will find you're all right. :)
Of course it is ok but since they think differently and it sounds like it might be causing friction, it might be better not to discuss how you plan to live. Just do it.
Yes it's Okay it's your life you live it the way you want to.
That's fine. Nothing wrong with it, really.
At least, I don't see anything wrong with it, as long as you are socially, physically, and emotionally balanced.