In modern times, I'd probably recommend just enjoying different games famous for their stories & atmosphere, like Fallout New Vegas. OSRS gold is a glorified midieval cookie clicker. It is a skinnerbox and also a mindhack, but some people take pleasure in the skinnerbox.
Quests are not actually the main means to level up in the two versions of Runescape. They do give you some XP for particular abilities when you complete them, but in case you did all of the quests in the game you would not have maximum stats in anything. In reality you'll find that for a lot of the mid to late game quests you'll need to grind some abilities yourself to meet the requirements to even start it. With Runescape the major way you progress your character is grinding mobs for combat XP and grinding the skills for their respective ability XP.
OpenRSC is a pretty good approximation of their original RSC. You won't have the ability to log in to your old account, but each of the other content is not there.
My only real claim to Buy Runescape gold fame was minding my own business grinding dragons at the members area along with a horde of players show up and it is Zezima in the midst grinding with a massive audience. For your youngin's here he had been, at least in the time, the top player in the game They purchased a gold mine when they obtained Ace Of Spades but then kinda just forgot everything they bought.