Can I ask questions like
- why you don't travel to ...?
- what do you think about traveling to ... country?
Please don't ask questions like that, they're exactly the ones mentioned in the Help Center article What types of questions should I avoid asking?:
To prevent your question from being flagged and possibly removed, avoid asking subjective questions where ...
- every answer is equally valid: “What’s your favorite ______?”
From the same page:
You should only ask practical, answerable questions based on actual problems that you face. Chatty, open-ended questions diminish the usefulness of our site and push other questions off the front page.