I've always found it ridiculous that effectively 1 planck-time can be the difference between a collection of cells and a human and therefore the difference between selfish rights and outraged sorrow.
The idea that you can draw the line arbitrarily along a child's development other than the very moment of inception and call one a self-centered right and the other murder is preposterous.
The very fact that it is the premeditated interference that prevents the baby from continuing to develop should be the light-bulb moment for most discerning and logical individuals. You literally have to kill the baby to stop it from becoming a fully-formed version of itself - that is literally it. You have to kill it to stop it from getting to a point that you 'begin to feel bad'. It is ridiculous.
The fact that, when unimpeded, that baby will grow into an adult individual should be a pretty obvious reminder to people of what they're actually doing.
I've been saying this for a little while, but I'm sure a time will come when society collectively looks back on this period and shudders at the horror of it all.