My wife wants to start divorce proceedings , but i dont want to leave my house ,?

i love my wife soooooo much we have rowed a lot over the norm money , kids ,(normally at week-ends) i have exhausted all roads to get her back , she has tried to oust me out via solicitors letters etc , but because no violence she cant do it legally ( we have argued wen we have had a drink !!! ) so she is going to solicitors and has just texted me to say unless i give her an answer i.e soon to leave the property she will divorce me and get 60% of the value of the house , i have 3 kids 19 , 16 , and 14 , and to make things better my mum in law is in the annex attached , should i stay or go and live on friends and family sofas , i am the main bread winner and pay All the bills , ... i honestly dont know whats best