That's nice and all , however I suppose that BitcoinXT was the only project planning to increase the Blocksize of bitcoin (altcoin) .. now without what are we supposed to do with bigger blocks ? are Bitcoin Core developpers planning to do anything , if not there is no reason to continue using Bitcoin I suppose .. no mainstream = no future .

Where did you get the idea that Bitcoin needed to be adopted by mainstream to be successful in the first place?
Increased adoption would help Bitcoins survival into the future, the history of file sharing can be considered as a precedent for this. I would also like to see more people benefit from the Bitcoin blockchain directly, because I think this would do much good in the world.