First one but with So... - it makes it sound less aggressive/interrogative as a question - So, how old are you now? The second one is too stiff/weird to ask off the cuff.

please correct this

This is natural It is a fact that we all are exist for a temporary limited time period. And in a short space of time we want to improve ourselves make better himself. Around the world too many people's are living; everyone has their own religion , culture , language ,worship and thinking's thoughts and feelings feeling's.
Neither any commitment with others. We are finding things thing's but we did not find himself ourselves - that is how we are living going. What we are getting for which purpose for others are for himself ? It might be extremely difficult to understand someone's nature,
but the path of life is visibly clear along with the orders order's of God and we just need to think and follow the right path in of life to be happy make happiness. Around the In life and around the world .......

 

Bits in yellow I wasn't sure about... so left them but they are not right...

True, it's not nice to use the word "pay". You could say several things... I would usually say "Let me get this" or "This is on me".

Sorry to be completely unhelpful and silly but your question made me think of this... http://youtu.be/Ahg2GVWHGKY

Someone who displays great ease at getting what they want (usually by being slick...) Can be used to refer to a guy who is a player.... as Sade once sang... http://youtu.be/tY-H0ce6wkw

although they have the same meaning (ie. something doesn't work), "out of order" is not used for your own personal items. rather it is used for public things that don't work - the parking meter was out of order, the vending machine was out of order etc....