Signature forging has been an ignored issue for ages.
In the US, most banks will subsidize the $15-ish for a box of checks out of the interest earned from the money in your account. Likewise, paying the payee is also subsidized by the interest you don't receive. So Americans see checks as a way to move money without fees.
Check fraud is still a big issue, and I'm very surprised that no other payment processing company has figured out how to hide fees from customers in unpaid interest.
Again: you are preaching to the choir about checks not being secure; I personally refuse to use them for numerous reasons, this being one (others include the variable delay, the risk of losing the slip, and the increased paperwork due to having to file 1099-MISC).
As for an alternative payment processing company that supports transferring money for free: if you use your PayPal balance to transfer money for a purpose that cannot be disputed (such as "I admit that I owe Bob money, and this is my payback"), they do the transfer for free.
In the US, most banks will subsidize the $15-ish for a box of checks out of the interest earned from the money in your account. Likewise, paying the payee is also subsidized by the interest you don't receive. So Americans see checks as a way to move money without fees.
Check fraud is still a big issue, and I'm very surprised that no other payment processing company has figured out how to hide fees from customers in unpaid interest.