[dvdkon]

The whole "data and (hidden) code mixed in a seemingly-infinite matrix" concept offends my engineering sensibilities. It's not about bugs in Excel, it's about the bugs my spreadsheets will have since I forgot to fill in that one cell, overran the area used by some formula elsewhere, didn't set the format correctly, so visually all looks good but it breaks a sum...

To get back to my point, working with spreadsheets feels bad (from my experience) because I have to juggle all the things mentioned above. In my favourite programming environments, mistakes of this sort are generally directly evident in the form of errors.

If I had more spreadsheet experience, I would get better at avoiding these mistakes. But I choose to use Python, where they are handled by design.