This article is for informational and educational purposes only. Microsoft has officially ended support for Windows 7 (End of Life: January 14, 2020). Using unsupported operating systems on internet-connected machines poses significant security risks. Downloading Windows ISOs from non-Microsoft sources can be dangerous. Furthermore, distributing or using stolen product keys is illegal. Proceed at your own risk.
If you already own Windows 7 but lost the key, you can often retrieve it from your current installation: windows 7 ultimate 64-bit download with product key
No. Not for daily driving.