In crowdfunding, the crowd always comes before the funds! The biggest benefit you generate from any crowdfunding campaign is publicity and community support. Even if you don't reach your fundraising target, this often is a win for the cause.
Crowdfunding also allows you to reach a large group of people in one place who rally together because they believe in your cause, even before you launch. This grassroots support provides the freedom to not be solely dependent on a bank, a grant, or a few supporters. This spreads the opportunity to donate to a cause globally and reduces the pressure on the campaign creator and their direct contacts.