Stack choice is extremely important. Your best possible performance/binary size/resource usage is a function of your stack. You make that choice in minutes when starting a new project, but then it haunts you for years. If you built your desktop app with Electron for example, you can't just ditch it at once down the road — switching to something better would be a serious, laborious, long undertaking. It might be easier to just chuck the thing altogether and start from scratch.