The bike is a bit worn and an upgrade would be good. With an 11 speed 11-32 cassette I would get 34/32=1.06 (better than now - for climbing -). Even downhill it'd be better (50/11=4.55). Plus smoother shifting etc.
Only economically it wouldn't be smart but (because of wife etc.) I cannot get a new bike (parts though would go unnoticed.... ). I keep reading everywhere "I upgraded to 11 speed" etc. etc. so I thought it'd be easier.