There already has been such discussions and everytime I choose Bitcoins over paypal for the "N" number of reasons.Low fees,easiness,anonymity and fast transactions are few to be mentioned.The simplest reason I could point out is the service fees for my country's Bank Transfer.I'm not from the US or the Uk ,when I try to send the paypal amount in my bank accounts I get ripped off by the service fees its like almost 30% .Also,who wants to submit documents publicly on the internet ? BTCBitcoins forever!

Paypal has always been growing, as others said above, because it is the largest most trusted online payment processor now.  This is mostly because of lack of innovation from competitors.  When Bitcoin is used more it will quickly surpass paypal.  patience. 

Why not Bitcoin? Bitcoin + Lightning Network is the real Paypal killer. Until then we will possibly remain rather small, but that is actually good news since it only means we have more time to benefit from being there before the average joe jumps in. We are still early adopters. There will be no excuse to not accept BTC once LN is working. It will faster and cheapter than anything else.

It can be Bitcoin, I only stated that it might not be Bitcoin I don't see Bitcoin being ready for prime time straight away with whatever change it may have this year.

We're delusional if we all think we're early adopters. Not even all Legendary users from this forum are early adopters. At least that's what I think.

Bitcoin is already faster and cheaper. We don't exactly need LN or block size increase for that, especially the cheaper part (pretty hard to be even more expensive than PayPal!!)

Haven't never understand the reason why can be compared bitcoin with Paypal. Have nothing in common. Bitcoin is currency (or whatever is classified in several countries when it is regulated and is regulated according to the various conjunctures existing in every country) while PayPal is a service which use currencies. So PayPal tomorrow, if decide, can accept bitcoin as one of the currencies which can use this service to reinforce the anonymity which have bitcoin itself. What is taken as a common characteristic when are compared these two subjects? The anonymity which offer both? Have any meaning. It was the same to compare one person who don't want to be identified with a house when is new and yet don't have its address. The second subject can be used from the first and both are anonym. But anyone it is not so crazy to compare the first with the second. Exact the same is even the case of Paypal with bitcoin.

...and do not forget: Paypal is much easier to handle for non-techie persons. Let Bitcoin become more user-friendly (and it will be in the future) then Paypal will get a serious competitor. But not only Paypal, Western Union, American Express, Visa, Mastercard and all the others, too.

with paypal you are also safe, when you do tranzaction online easy can chargeback

Accepted in much more places and its had a huge head-start from being the main method for eBay.

It is easier to grow when you have a bigger user base already. Just look at two facebook pages, one with 10k followers and other with just 1k. Which one will have a harder time growing? But when user base is really big, then it becomes harder to grow.