RS3 is boring to majority of those who now play OSRS, or have quit.
It is a a lot of grinding, and eventually you become addicted, (no real explaination as to why). Although to me specifically the RS3 gameplay is annoying to look at, the actual game isn't as bad in Legacy Mode. Has a lot to offer nowadays, a lot of quests, different combat styles, different gameplays, bossing, staking, pking, pvping, pvming, or just go to F2P worlds and chill with ex/members?!
You really just have to go with the flow, it's a long game, and if you're just starting out it's incredibly boring at first, in the middle it gets fun and addictive, then near the end boring again.