has anyone here regretted doing the son doong expedition?

i really want to go but i dont make a lot. i want to know if going to the cave is worth spending more than 4 months worth of my salary lol

i've also never done a multi-day hike. do i have to try a local one first? i'm 31 years old, female, able bodied, no physical ailments. not an athlete but i've done day hikes of over a dozen local mountains (i know caving is different from hiking but it's the closest thing i've done to caving so bear with me please 😔👉👈)