It is better to stain pressure treated wood because painting it will not seal the wood and could lead to peeling and corrosion. Staining pressure treated wood will help to protect it from water damage, UV damage, and fading. It will also help to keep the wood looking new for longer.

There is no definitive answer to this question. Some people feel that painting pressure treated wood can help seal it and protect it from the elements, while others believe that staining is the better option, as it can help to preserve the wood and keep it looking new for longer. In the end, it's up to personal preference.