Also full disclosure. Our Ds1 is now 15. he was diagnosed with autism and global development delay 11 years ago. Since the he has been diagnosed with Tourettes, adhd, sensory processing disorder and low cognitive function.
We never applied for any sort of DLA reasoning that we could (at the time) easily afford to cover all of his needs ourselves and that due to this we did not feel it was fair to burden the state in anyway.
VAT on school fees comes in. The rhetoric from labour about how people like us are pure scum and deserve to bleed. We thought 'fuck it, and fuck them'. Applied for DLA and have received it for him. £412 a month. 10 years after he was eligible. It was 100% a feeling of 'let's get a little back when we are being screwed over so hard'.
I sometimes feel a bit guilty when they talk of the welfare bill. But when I think of how much we are being taxed (ironically, the £412 is roughly the VAT bill for his school fees) I think screw it.