Destiny 2 can be played solo for a surprising amount of time, but the experience changes once you start tackling activities with a regular fireteam. Matchmaking is perfectly adequate for routine content, while a consistent group becomes much more valuable when communication and coordination are actually part of the challenge.
The biggest advantage is familiarity. When you regularly play with the same people, everyone gradually learns what the others are comfortable doing. One player may be particularly good at handling mechanics, another might have an excellent support setup, and someone else may specialize in boss damage. This makes difficult encounters feel less chaotic.
A regular group also makes learning new content easier. During a raid or dungeon, mistakes can be discussed without immediately searching for another teammate. Instead of treating every failed attempt as wasted time, the group can adjust its strategy and try again. Over several runs, encounters that initially required constant communication often become almost automatic.
Of course, not everyone has friends who play Destiny 2 on the same schedule. Finding enough experienced players for a particular activity can sometimes take longer than expected. If you are stuck because you need a capable group for a specific objective,
here's the service I used is one way a player might point others toward Destiny 2 assistance for raids, dungeons, PvP, gear-related goals, and other activities.
Still, if you find people you enjoy playing with, keep them around. A reliable fireteam is arguably more valuable than another perfectly rolled weapon. Gear will change as the game evolves, but having players who communicate well and are willing to learn encounters together makes almost every part of Destiny 2's endgame easier to enjoy.