It’s subjective. Easy builds can be super fun. Especially if you earned it by getting some gear. It’s also an accessibility issue. Not everyone is 25 years old with lightning reflexes (or, conversely, not everyone has 20 years of history with the genre).

Anyway, my point was only that if you’re bored with being OP, try something different. If you think you’re invincible but killing things is a slog, maybe shift your gear to be more offensive etc. The way these games work, difficulty is entirely up to you.