Do not marry those in your blood relation (4:23) - but how come people marry their cousins? Most of us muslims say that aunts (mother's sisters) are like our mother nr. 2, and if that's the case shouldn't their children be like our siblings. I'll never understand this really
im not an imam in anyway shape or form, but from what I know it’s allowed but I dont know the reasoning or the wisdom behind it. a couple people you could try here on this website who may be able to help is franksonnetti or partytilfajr they are both much,much,much more knowledgeable than me and inshallah they can help you.
That is not the correct translation of 4:23 at all, in fact it is a detailed verse explaining who from your blood relatives you cannot marry. Anybody from your blood relatives not mentioned in this ayah i.e your cousins, are permissible for marriage. Please be careful and make sure you check the correct translations of ayahs to avoid further confusion.
Also, to say most muslims consider their mother’s sisters as like second mothers is quite a generalisation. Even still their children are not your real brothers/sisters, they are your cousins no matter what you consider their mother. Perhaps it comes down to cultures/traditions in regards how people see certain relatives as well as preference but this is permitted in Islam and it is definitely not abnormal, rather quite the norm in certain societies,
May Allah forgive me for any shortcomings