It is the same as every videogame. You get to feel like your masculine urges to conquer, master, and continue your bloodline are being fulfilled without you doing anything to upset the demonic order. It is a "safe" outlet for you to waste your time and energy without actually accomplishing anything.

Also, the simulated woman is made to be more attractive than amy real woman you'd meet in your life. She's pretty and agreeable and will ultimately fall for you. There is a set system and a set path to follow to get the outcome you want. The good outcome is guaranteed with the right inputs. In the real world, if you could make all the "right" inputs and still reach a failure state.

The modern world is designed to make young men fail but the digital world is set up so you eventually succeed. It is indescribably tempting to eschew the real world to live in delusions.