I remember the time when we used TNT for that. Apparently neither is very healthy to handle. PE can be used as candles, unbreakable, burns fairly nicely depending on the wick, have to make them yourself though.
Yes, I have had several failures on lighting a wood fire, out comes the alcohol or gas stove.
Yes, failures are normal. Nothing to be ashamed of!
In wet conditions, when I was running low on alcohol (fuel) I usually filled the Trangia burner ( with the simmering ring on) maybe 1/10 full, then placed it below the damp wood sticks.
We used sprängdeg (Pentyl/oil) with success in my unit.
Ones I thought the boys the technique it became the fuel of choice once they ran out of Alcohol.
Demolition was my field.
OF: It is fine to try to be environmental friendly, and be so most of the time, but it is important to know some tricks to make it through a survival situation.
To be frank, if you use a bit of synthetic rubber a couple of times a year will not matter.
You can always compensate by not putting your fruit and veg in the plastic b@gs but buy it ‘loose’.