I personally interpret 4th commandment as to not shame my parents, not do acts that will dishonor them. Because otherwise - they are atheists, if I had to listen and believe all they say I would come in conflict with God.
But imho if you start playing with tobacco now and imagine you won’t get hooked you’re wrong. If you stay on low tobacco there won’t be much health risks, but think of your budget! Haven’t they made them so expensive it’s actually a luxury? You can waste your money on many other more enjoyable things. I wish I never started either. But I did when something bad happened in my life, I did not want to hear the same old phrases from my family, my friends all vanished with my former bf, and I wanted to sit and think. And I thought what to do? Smoke. Wish I never did that. Better to go jogging, walk in a park, listen to music, anything else silly and think than link meditating + smoking.
Now the price of packages continually increases and will continue to do so and I wish I didn’t feel the psychological need to smoke and I never thought I’d get addicted (because I started late in life 25+) but I did.