Becoming a wife doesnât erase your being and create a new one, in fact it enhances all that you are, as it strengthens the foundation for what will now be one of the best roles in your life, without a doubt your most important investment. â Yes, choosing the right person to grow old with is an investment. It will cost you money and time, and will require you to be committed mentally, emotionally, physically, and spiritually. So yes, it is an important life investment.