Sharia law seems harsh by western (United States) standards. Yet, US standards seem a bit weak to others, because often the guilty get away with crimes. Harsh penalties discourage crimes.It's not on me to say whether you accept them or not. I am just telling you what is in Islam. Puritanical is not a good word to use for Islam..it is a genuine way of life that is good and will take you closer to your Creator and your place in the hereafter.
People take the easy way out almost any chance they get. Do you not think you are tested in this life? That you are to take it easy and say that God is all love? Who are we to put ourselves above God's laws and commandments? People say, Jesus died for me so I can sin as much as I like and still be forgiven..are people so privileged that you claim God needs to die for them?... It's like it's just so strict yet look at all the problems in the world...then they have the nerve to blame things on God for not helping them. It just never seems enough..
Many would use the word "puritanical" to describe Islam, but I am not the judge.