There are people making statements beginning with "Now that bitcoin is getting big..." I think comments may be misleading to newcomers. Bitcoin is often criticized for being nothing but hype.
Although it's impossible to know exactly how many bitcoin users there are, a chart in this post suggests that there might be approximately 20 thousand active bitcoin users.
The wikipedia article for PayPal reports that Paypal has 87 million active accounts. And this recent article reports that they have 100 million accounts.
If we take the 100 million number for Paypal, the bitcoin user base is roughly 0.02% the size of PayPal's.
Bitcoin is very much in its infancy, but certainly has a lot of promise. Bitcoin has the potential to reach users that are excluded from the PayPal system because they have no accessing to the existing global financial network.