Maybe for occasional rests after work, but not generally no.  

 Good for exchanging for #bitcoin 

 I don't think so.  

 No, I only need one chair #bitcoin 

 Sure,… as with everything, the dose makes the poison. Sitting for 8 hours straight is as bad as walking for 12 hours without a break or sleeping only 4h or always 17h each night IMO. 

 Depends if you can sell them or not