I can give you a huge list of disadvantages that paypal has ..
To start with the verification proces ... They literally force you to get verified by keeping stupid limits on your transactions ...
Next they have limits to accept card payment and you need to upgrade in order to receive un limited card payment .. If you upgrade fee will be deducted from all the payments .. If you dont upgrade you can t receive many card payments ..
They can limit your account anytime they want and take hell a lot of time to grant access again ...
If they see a transaction with in sufficient data in the Memo bam ... your account is limited ....

Its really a huge mess ...