Sexual attraction to Ones' Mum/Mother, Mom.

Whilst discussing An Americans' react-vid' to an 'Inbetweeners' episode (British, coming-of-age - Cringe,com) Whereas New schoolkid, Will, is picked-up from his 1st day at New school (15-16-yr-old) by his mum (Typecast - Buxom milf) (Sorry for blunt terminology) - And his, New found...'circles' gesture their sexual appetites theretoward - The Question arises: 'Will, Would you give her 'one?' - He replies 'Well NO! It's my Mum' - "But, what if she wasn't - Would you Give her One, then?'
NO, Neil, she's Still my mum...... '

So - The question arose.

If you and your mum (Male-directive only) were seperated at (Pre-1-yr-old) ish - And you met-up 30-yrs later - UNKNOWING of kinship - Would being attracted to one another, marrying, having kids, etc - Be Unusual and/or unnatural?

We then diverged into rednecks, hillbillies and 'wrong turn' (Movie)

Point being - Would it, otherwise, be Natural to be attracted to other family members - Were we not conditioned to be appalled by such?

Have a Lovely Day