Glider chair and annoying partner?

Ive been looking for a glider chair and stool for my nursey. I found one for �85.00 which is very good price. However, my partner thinks this is a waste of money, that i should use my computer chair instead to get up and do the night feeds on. How can i make him understand that comfort in nighttime feeds is very important!! Hes really beginning to annoy me and im trying not to lose my temper with him!