Small =>

• fast download
• fast rendering
• ideal for mobile
• small API -> small learning curve, smaller lock-in factor
• less framework, more javascript
• MVC components out of the box
• No need for JSX
• Flexible
• Use of functional programming: point free functions, partial applications/currying, composition, map, reduce, filter etc..
• Used in production (Guild Wars 2, Lichess, Flarum)
• Great community, check the Gitter room