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Learning on lead-free nearly turned me off of soldering until a buddy gave some Kester eutectic, that is a freaking joy compared to lead-free

Lead-free is fine.

Lead-free with poor quality flux is abhorrent to use.

Get good quality lead-free with good flux from a reputable manufacturer (Kester is good, as you mentioned) and it's fine.

In fact, I prefer how thin and quick to wet out SAC305 is over the lower melting point of Sn63Pb37.

I have made quite a few keyboards (including handwired) and a few other electronics projects with lead-free solder and it has never been an issue. I use lead-free solder with a resin core, set the iron to the recommended temperature, and make sure to tin the tip.

Lead solder is totally attainable for hobbyists - I bought a 100g spool a few weeks ago.

Yeah tbh I’d rather struggle a bit more than have lead in the mix. Lead is for life

If you're getting lead poisoning from soldering, you're doing it very, very wrong...