I married at the ripe old age of 37, so I had had my last name for quite a while, and I kept it. Also it is easier (Wilson vs. Rasmussen), and I didn't feel like changing my nursing registration, etc. However, when our dd was born, we/I stuck her with my dear hubby's last name. My dh would have gladly taken my last name, or we once joked that we should become the Wilmussens.
Laura