@RamseyNeil, mine used to be the same and was probably due to about 20 years of wearing normal pointy shoes. Luckily in my 20s and 30s I was pretty much either in flip flops, barefoot or in big wide boots for work before switching to barefoot style shoes so they got another 20 years to revert to normal.
My mum dug out some photos from being a toddler and you could see how wide and splayed my toes/feet were before wearing ‘proper’ shoes. Especially compared to some beach shots from late teens where my toes had become much more tapered in. And now they’re more back to how they were.
My arches and stability have greatly improved as well.
@MSP – I agree.