Quick answer: Yes, you need some user research, you cannot judge your own game objectively; even lightweight playtesting plus real-world data on where players struggle improves your game.
User research is how you see your game through players' eyes. Here is whether you need it.
Why You Need It: You Cannot See Your Own Game
You need user research because you cannot judge your own game objectively: you know how it is meant to work, where to go, what to do, so you are blind to the confusion, friction, and problems real players hit. Watching real players reveals what you cannot see yourself, which is essential for making the game actually work for them.
Bugnet provides one form of this insight at the technical level: it captures where players actually crash and hit problems in the real world, surfacing issues you cannot see from your own play, the technical complement to watching players struggle with the design.
It Does Not Have to Be Formal
User research does not require a lab or a budget: watching a few people play (playtesting), reading player feedback, and looking at data on where players struggle or quit are all user research. The point is getting real signal about how players actually experience your game, at whatever scale you can manage, not formality.
Bugnet contributes lightweight, ongoing user research data: it captures crashes and issues from real players automatically, so you have continuous real-world signal about where players hit technical problems, without running formal sessions, the kind of always-on research that complements hands-on playtesting.
What It Reveals: Real Behavior vs Assumptions
User research reveals the gap between how you assume players behave and how they actually do: where they get confused, what they ignore, where they quit, what frustrates them. That gap is invisible from the inside, and closing it, making the game work for real players, is what user research enables.
Bugnet reveals the technical side of that gap: where players actually crash and hit errors (often in places and on hardware you never tested), so you see the real-world technical experience versus your assumptions, closing the gap between how you think the game runs and how it actually does for players.
Yes, you need some user research, you cannot judge your own game objectively; even lightweight playtesting plus real-world data on where players struggle and crash reveals what you cannot see yourself.