Sperm cells aren't living beings
yes it is. A cell is alive.
whereas a human embryo is a living human being.
debatable. There is no universal definition of what a "human being" is.
Again, every cell in my body has my DNA, that doesn't make my skin cells a human being. What we ultimately define our sense of self by is our brain, and our cognition, our ability to reason, think, and the emergent property of consciousness. Without those things, we are sacks of meat and nothing more.
The dirty little irony is that the pro-abortion argument is decidedly unscientific. In fact, it's irrational and would be deemed as such but for the fact abortion must remain legal. Arbitrarily designating that life begins at 2 years of age is the sort of thing that arises out of irrational thinking.
I am not arguing an embryo isn't alive. I am not arguing life begins at 2 years old. Try and keep up dumbass. I am talking about sentient life, self awareness.