"I want to save data and I want to save it now. I dont want to define a new row with int or VARCHAR or define how large the table can be."
Don't we all? But the rest or us want to be able to find it again and to have it consistent when we find it, especially if multiple people are saving related data. We also have multiple people wanting to access the same data.
However there's always the much under-rated cardfile.exe which may do just what you want.