To be fair on Vin Garbutt, he wrote this song many years ago when abortion had only just been legalised a few years previously. He was much younger and less experienced as a songwriter although he felt very strongly and passionate about the issues. However, it's not the type of song which he would write today nor, I believe, one which he includes in his repertoire these days.

At this time, most lay people hadn't had the opportunity to think things through in great detail and tended to fall quite firmly in one camp or the other.
Until I considered things more fully, I was very much against it myself mainly due to the more emotional, and sentimental aspects along with my previous religous upbringing such as it was.

While I am still uncomfortable about the idea, I can also understand why it is the only option for many women and that they, ultimately, should have the right to choose. As to when and where it is appropriate, advisable, or right, when it is really necessary or (Some might say)selfish to do so is a different argument or discussion as opposed to whether or not it should be legal or not. I don't intend to enter into that here.