Zyra is one of the most fun champs to play as support
During early game Zyra is fun because she gives me the opportunity to hard carry bot lane. Also it's always satisfying to block a Blitz/Tresh hook with a plant, and a single well placed ulti can decide the whole game later. The fact that she is somewhat fragile and slow adds to her fun IMO, Zyra forces you to have map-awareness and think positioning, there is no "get out of any situation freecard, by fast clicking jump/dash". You have to read the game and play around vision or your starting to feed.
Zyra's play style overall is very unique and she is probably a bad pick for K/D/A players. Mid/late game your escape is bad and fed people focus you, so you should be fine with trades that costs you your life as long as it benefits the team, maybe your death gave your team a shutdown/objective or multiple kills - then good.
Unlike some supports, Zyra has many viable builds.
Zyra also has an unusual power curve and tend to be strong early in game, then (based on my experience) usually falls off at around 3-4 items and then hit a new powerspike again at 5-6 items. So: good, then bad, then decent again.
On a side note: she seems to be too weak to see any professional play these days.
TLDR: yes I enjoy playing Zyra