Just what is Open Source all About?
First, users of open source software are not "Freeloaders" as those who know no better claim. The "free" is "freedom", freedom to view the source code, modify that source code, and even redistribute the source code....legally.
Open source should not be confused with "Freeware". While freeware is distributed for free, the similarities end there. You cannot legally view the source code of a "freeware" program, and you certainly cannot - legally - make changes to it.
Of course, there is nothing wrong with using open source simply because it is free. That is why it is free of charge! It is just more than "no charge" as described above.
Another misconception born from the "money-talks-baloney-walks" department is that Linux is a "hacker's operating system". Want to tell NASA and many other government agencies who use Linux in mission critical systems that they are using a "hacker's" operating system? I didn't think so. The Linux kernel is simply super stable and dependable. Even the microwave oven in your kitchen most likely uses part of the Linux kernel to run its controller! Do you know what makes that super all-in-one entertainment remote control do its magic? If you guessed Linux, you are likely correct.
Strangely enough, the weakest link of open source hinges from the limitations imposed by proprietary software and not any shortcoming of open source software itself. Even among proprietary software, interoperability depends on the almighty dollar so you can see the problem right there!