Decisions.
Pruning: I suppose it gets easier. I suppose they like it. But man, at first it's hard to snip off those hard-earned branches. You choose carefully, and for different outcomes: beauty, building hardwood, producing fruit, long-term, short-term. You get lost in the story of a single vine. Then you look up and see 649 others. "Do me!" "Do ME!" " No, me!"