Re: (for men)are you or would you be close to your in-laws?
LOL, all I said was it makes things easier, sometimes you have to prove relationship status to state, local, and federal authorities, or even some public or private corporations.
Obviously there are many ways to do that ie birth certificates, marriage certificate etc.., however having the same last name is just a simple convenient way, as its easily recognized here, since its part of the culture. Authorities will usually accept that on the spot.