Many of the “rights” which are being promulgated and promoted by today’s secular culture are in reality straw men, fine-sounding proxies for demands and desires far less salutary than they sound. Thus, gay marriage is not about gays getting married (hence the lack of enthusiasm among gay rights advocates for civil unions which provide all the legal benefits of marriage), but is instead an effort to destroy traditional heterosexual marriage as normative in culture, thereby removing not merely legal but cultural restraints on all forms of sexual and relational deviancy. The high standard — heterosexual marriage, with its enormous advantages in the raising of children and establishment of societal self-restraint, morality, and relational stability — must be brought down to the lowest common denominator of any two (or more) people getting “married” — with the sole purpose of muting societal condemnation for self-gratifying, dysfunctional and heterodox partnerships. Unrestricted abortion, a.k.a. “freedom of choice”, is about the uncompromising (albeit delusional) demand for unconstrained sexual license without consequences — especially for women, but also for their sperm donors who want no responsibility for their casual hookups: dispose of the unplanned pregnancy, move on to your next “partner”, and you have achieved the perfect “zipless fuck.”
Likewise, physician-assisted suicide is not at all about “death with dignity”, but rather about actively enlisting the culture in support of radical individual autonomy. Not only must we exert full control over the time and manner of our death — which we have always been able to do, by simply killing ourselves — but we demand that society support, honor, and praise this decision, without the faintest whiff of criticism or condemnation. It is not sufficient that we be able to kill ourselves. Rather, it is necessary that we actively kill those societal sensibilities and strictures which condemn such a choice as morally misguided and potentially destructive to our human dignity and our social fabric.
Every single "right" promulgated by the Left can't be found in the US Constitution. Instead, these "rights" come from the Leftist's desire to enforce his way of life onto other people. They want to do x, y, or z, so dammit, they'll claim it's a right and force everyone to let them to it!
After you're done, go raed Francis Porretto's post on why the Left is pushing for Embryonic Stem Cell research even though every major breakthrough in that field has come from Adult Stem Cells, not Embryonic.