I have however, normally used a 8 GiB SD Card - quite successfully (although I did remove wolfram-engine in late 2016, but more because this took so long to upgrade, and I did the same on a fresh install Stretch). I successfully upgraded in April 2018, but when I tried to install the latest upgrade this filled my SD Card and crashed. (My /home is only 0.65GiB)
While I now use 16 GiB SD Cards I have a fist full of 8 GiB SD Cards which I use in my older Pi.
After some not inconsiderable effort I managed to restore a working system by removing
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python-sense-hat python3-sense-hat python3-sense-emu python-sense-emu python-sense-emu-doc wolfram-engine python3-skywriter python-skywriter wolframscript scratch2 scratch
There is probably nothing wrong with these packages, but they are of no conceivable value to me - much as I imagine the few applications I have installed (nginx server, Arduino, Python wheels) would be of no use to most Raspbian users).
Raspbian seems to have become bloated - probably no different to other popular OS, but it would be preferable if these packages were optional installations (or at least come with a simple removal procedure).