There are ways to change system fonts but it's a similar situation to Windows where your font choices may not fit properly in some spots and some apps may set t

There are ways to change system fonts but it's a similar situation to Windows where your font choices may not fit properly in some spots and some apps may set their own fonts and override your choice. Otherwise it's up to apps to offer font options for things like list views / text views / etc. In general Apple's philosophy is not to offer options that are pretty much guaranteed not to work consistently or produce unexpected results