Find Yourself on the Journey
Basically, any card you have has its own list of benefits, and the better credit cards have extra points or cash-back categories for what you buy frequently. What a trifecta does is build a combination of cards that give you the most cash back or points depending on your preference and goals.
Many times the most rewarding trifectas like the American Express Trifecta and the Chase Trifecta with the Chase Sapphire Reserve, while extremely valuable for frequent travelers, have high annual fees that can be prohibitive for those of us who only travel 1-2 times per year.
There is no perfect travel companion. Each and every relationship, including the one you have with yourself, has shortcomings that are especially evident when spending days or week on vacation. Insert your horror story here. I have lost friends, ended up fed up with people I love, and even been disgusted with myself a time or two while traveling, and these are conflicts that often overshadow otherwise amazing experiences. Choosing the right person(s) to travel with or, more importantly, choosing to be the right person to travel with is key to a happy travel life.