Both skipping and running are ways to move your body, which means that both are better than not moving at all. If you find skipping more enjoyable, then do it!
Yes! I think you would walk instead of run if you wanted too. I think the goal is to move your body period and for me fun/makes me feel good so whatever works for you!
Yes, skipping is very good for your body! Switching up your exercise routine makes exercise more fun and exciting. Try different exercises like walking, resistance training, swimming or playing a sport.
You can do skipping but it does not burn as much calories as you would do running, but you would also be less tired easily and you would be able to breathe better