One year may be enough to KNOW someone deeply. However, getting married is not as simple as understanding your partner. It is also about having mortgages, balancing career and a domestic life, having children (or not) and of course, the in-laws.
Hence, I would have to say that I will not marry (consider, yes) someone regardless of how much I am in love if I am not sure if I could work out all the matters I mentioned above especially if it is financial.
Yes, it is that superficial. Love doesn't pay the bills.
With regards to the parents, I am brought up in a society where going against the wishes of your parents is considered unfillial and basically, you go to hell (eyes are rolling, I know...
). I hope I'll never have to choose but if I have to... I'll choose family.