That is true, but when you landlord sells the home on you, and you have to relocate, your children will have to make new friends and go to a new school. They will never feel at home.

School friends are way overrated.  Children are resilient and adapt better than you think.  As a child I moved frequently as my dad worked in different countries.  I learned so much thanks to that and I wouldn't trade that experience for anything.  I became stronger and more capable.  

Children are growing beings and they need support and stimulation to satisfy their curiosity.   That's, IMO, much more important than familiar friends.