The standard career path for a scientist is to major in the science of your choice, and then enroll in the phd program. For most scientists, the phd program+a postdoc is the length of their science career- that's about a decade of doing science for less than minimum wage. Most scientists then bounce out of their field and start only tangentially related careers (IT work, high school teaching, etc).
You will fall behind your peers in the typical halmarks of adulthood during your decade doing science. You will start a family later, have kids later, own a house later, etc. You'll either retire later, or have a poorer lifestyle upon retirement. If you are ok with that, then fantastic. That decade of science will be looked back on fondly.