-ck's response.. close eyes, put fingers in ears and just scream go with segwit.
(facepalm)

I am not a contributor to any Bitcoin projects, but I am quite familiar with the scaling topic because I’ve been following it for some time now, and I am knowledgeable enough to clearly understand the technical details.

As others have explained, there is no security provided to the network by non-mining ‘full nodes’.