There are things more important than happiness, truth for example. Learning your partner is cheating is devastating news sure to spoil your happiness for the foreseeable future, yet many would prefer to be informed of the truth than live a happy lie.
Your grieving friends and family remember you fondly as the best version of yourself, mentally and physically. You will always live on in their memories.
Fire based weapony and digging without a permit is illegal. Your powers are great, but modern weaponry is greater. The inability to keep you contained and that fact you are a living warcrime (yay flamethrowers!) leads to your execution.
