There are holy places with sacred rivers and the demigods appear in deity forms. But these purify the soul only after a long time, whereas saintly persons purify just by being seen.
If it is accepted that Kṛṣṇa made the nature, not us, then it just makes it so much easier. You figure out what you do, and then you know where your strengths are and your weaknesses are. And then others also know.