"Shall I Rent a Lens or buy it?" "Are lens rentals worth it?" "Why would I rent a lens instead of buying it?"

These are three ways to express the same question, which seems to be in the mind of quite a few photographers (especially advanced amateurs; beginners don't consider it, while pros generally know what to do). In today's article I'll offer my views and opinion on this matter. To express things as simply as possible, I'll use the structure of review articles, with pros/cons, whom is it good for and whom it's not, elaborating on the matter along the way