2) Do you think paypal may accept bitcoin in next years (3-7) or it is impossible ?
3) Do you think bitcoin will be better than paypal ? when will happen ?
4) which better for now PP or BTC ?
1) I don't think this will happen any time soon. If it does, I think paypal will end up fining it because it's not in their best interest to hold bitcoin.
2) It's possible that if bitcoin gains some higher ground and it's a lot less volatile that Paypal would accept it, but I don't think that will happen soon. Maybe by 5 years? Not too sure right now.
3) I don't think Paypal is better than bitcoin, but I do believe that paypal has a larger user base, and it will have a larger userbase as long as fiat exists.
4) For now, Paypal is better if you're using fiat and it's accepted much more widely than bitcoin is. Bitcoin is better if you're looking for much more of an investment.