I'm basically going to echo a lot of the sentiment that other Woocommerce fans have already stated. Yes, Shopify is easier to use, however it is extremely limited and you'll be paynig a TON of monthly fees for a well tuned store. Were talking $300+ on top of Shopify fees + if you want a custom theme, that's another $180.
Almost all major e-retailers use Woocommerce or Magento for their large scale ecomm stores. Not to say that you'll be competing with those big guys, but there is a major reason why most large retail merchants use these two platforms.........because they are highly customizable and have unlimited potential as to what they can accomplish.
Woocommerce offers more plugins, more themes, more customizations, full control over what you sell (Shopify has restrictions on this) and really too many other reasons to list.
Woocommerce is free, themes are MUCH cheaper, there are many FREE plugins and premium plugins are a one time payment and VERY cheap.
Overall......If you want to build a serious business, go to woocommerce. If you want to quickly put up a store and simply sell 10 items or so, then Shopify may be your best bet for the moment, but you'll soon find yourself "outgrowing" the platform.
Let me know if you're looking for an all-in-one solution for a professional, fully decked out, Woocommerce Mega Store. My team and I specialize in this area.