Did I consent to being born?
There are some spiritual schools that believe we do choose to come here.
As for the concept of free will, I don't think it's that important of a question in practical terms. Clearly whatever the truth is, our experience of exerting will is anything but free. Anyone who wills themselves to do any behavior they already do habitually knows how un-free it is. Of course, you may think I'm just playing word games associating the "free" in "free will" with cost rather than freedom.
What I see as the real issue people get tripped up by concerning the will is in how much respect they pay to the subconscious mind. I think people lack a great deal of respect for the subconscious mind, the autonomic nervous system, how the body is the bridge between the conscious & subconscious and how these two minds are completely separate from one another.
I don't know about other cultures, but the west tends to have to much faith in the conscious mind and it's ability to control the environment, your body, your behavior, your thoughts and beliefs, your feelings and those of other people. There is countless evidence showing how little in control we actually are and the real frightening part is that our conscious mind is in on the conspiracy. Just take all your life experiences and all the studies we've seen regarding how looks affects people's perceptions of others. People don't even realize they are just attracted to people for how they look and nothing else. Instead their conscious minds backward rationalize the subtle urges and impressions broadcasted by their subconscious through their body. Attractive people literally make us feel good, excited, energized, relaxed, trusting, happy, etc. From this our conscious minds reason that these people must truly be good people who possess innumerable positive qualities. When they look at ugly people they feel disgust, apprehension, uneasy, depressed, angry, low energy, irritated, threatened, etc. Surely such a person who makes you feel such a way is bad person incapable of doing anything right or good?
Extrapolate this out as far as you dare. You'll see just how massive the pyramid (social dominance hierarchy) is. How far reaching. Are you responsible in such an instance. You're a single grain of sand in the Sahara desert. A single star in the entire universe. It's funny, because yea, you're still responsible on some level, but level is that exactly? It is sort of paradox where you are responsible for your choices, but you're not responsible for how they turn out.