Y isn't abortion illegal?

I was reading on da internet of types of abortions n it sickened me omg I can't believe some one would do a baby lime that dats just terrible y is it legal dats murder to an inisant baby If u don't want da baby there's adoption whoever gets an abortion needs to b torchered so they c what its like murder is illegal so y is it ok to kill a inisant baby dats so sadd