Yes, flourishes look great.
But you have to be slightly careful that they don't outshine the actual effects you are performing.
Spending 2 years perfecting a double waterfall dovetail vanish backpalm production to distract someone from your awful classic pass is time spent in the wrong area
If you are a serious cardician, you should also consider that using flourishes *can* lead to your audience finding your performance pretentious and flashy—and that makes you seem like a show off. Fine if you're a big name in lights.
The only real flourishes I will recommend learning for magical purposes are false cuts. I find them invaluable.
But, I agree, we as magicians ALL have learned some fancy flourishes and they are GREAT fun to play with.
But I've always found, at a party or gathering, for example, that picking up a deck of cards and going full-on into some flourishes isn't half as impressive as getting the audience engaged in a magic effect.
Flourishes, after all, aren't so much a 'How the heck did he do that?', more of a 'wow, I bet that took a long time to learn'.
But, each to their own, I guess. It's all about finding your own style.
I provide this as my own tuppence worth—food for thought rather than advice.
