I've deleted facebook official and other variants from my handset and now have an icon to the m.facebook.com site which is actually nice. none of the clients have behaved themselves.
for 'messaging' I only use hangouts (for hangouts and txt), gmail and yahoo mail).
instagram, vine et. al. I don't 'get'
Facebook is great for a continuous 'low level' awareness of what your acquaintances & friends are doing, but direct message is hangouts/txt (or email)