The phrase "intolerable burden" means something that is extremely difficult or heavy to handle, withstand, or bear. It refers to a situation or responsibility that feels too overwhelming, causing great distress or discomfort. Full definition
The signature metaphors of feminism say everything we need to know about how happy liberation has been making these women: the suburban home as concentration camp, men as rapists, children as intolerable burdens, fetuses as parasites, and so on. (firstthings.com)
Don't you realize that this will be an» intolerable burden from which most people will seek an escape? (religion-online.org)
Now if someone complains of the intolerable burdens of life, someone might propose that if they truly feel that way then maybe they should call the «Doctor». (faith.org.uk)