No. Ick. Just Wrong.
Everyone i know who grew up in cramped accommodation here or abroad chose not to share beds or even rooms with children if other options were available.
Some examples:
My grandad lived in a 2 bedroom terrace with his parents & 12 siblings; all had to watch their father beating & abusing their mother in close proximity until his father died young.
A Fillippino colleague grew up sharing a 1 room home with 5 children, parents & water buffalo.. but when she came here & got married she put her baby in their 2nd bedroom. She loved her childhood (especially her 'pet' water buffalo!) but hated sharing a room with parents & having no privacy; so didn't want her child to have the same.
One of my friends only just moved out of her 1 bedroom flat shared with her 2 yr old & her boyfriend. The 2 yr old had a cot bed in the lounge - my friend did not feel comfortable having sex with her child asleep in the same room.
Even a friend who had to share a studio flat with her boyfriend & his 2 kids would not have sex if they were at home too.
And when a colleague decided to put her new baby in a Moses basket next to the bed for the first 3 months - she told her husband that sex was only allowed when the baby was in another room.