The distinction between fact and opinion is vital. Opinions can differ, but a well-reasoned opinion will be based on facts, not blind prejudice or lazy assumptions. If you can't make your mind up about something, the chances are you haven't fully absorbed all the relevant facts.
I've borrowed this quote from my fellow tech journalist Richard Chirgwin, but it's a point that has been valid for a long time: you need to distinguish between facts and opinions, and it's facts that matter when you're trying to make your mind up. Decisions are rarely easy, but uninformed decisions are never right.