A quest is made to have a journey in life. – Or you can say life has so many surprises.
I must admit that the help billboard posts are boring. —e.g., Sebastian posted on the billboard to get a Joja Cola in exchange for 75g.
Sebastian was so stingy when it came to that. I swear I never gave him his favorite gift, but I elevated his heart from completing his lame quests. – I was not interested in him...
To my surprise, Sebastian's heart's events happened by themselves...I swear I did not make it on purpose to activate it.
Guess what? I married him after reaching out to full hearts despite, he gave me the lamest quests... But, I do not regret it because it is better than giving their favorite gifts...I am happy that I am being chased by a man that's why I marry Sebastian.
When someone gives you a quest, you will get new information and rare items. You never know what you get at the end. Isn't life beautiful?
Also, without a Pirate's wife quest, I couldn't learn about Kent's military background... You get the idea.
It's up to you for not wanting to complete the quests.