I have been playing the game few months after it got released, i've been obsessed ever since, the best year was probably 2017, new events, everything is good and overwatch was really popular (still is but not as much when comparing) i play in ps4, and i'm a
girl so i always mute my mic to avoid getting harassed, or sometimes i don't even join the team chat in comp. i've been hardstuck gold ever since but i got into plat easily because of the 2-2-2 update.
Yes, there are times where it gets lonely and boring, very toxic too and i take a few weeks break then come back again. People hate overwatch and call it toxic etc because they play it too much that it gets to a point that they hate everything about it (speaking from experience) so i suggest reducing the amount of time you play, join your friends often, play no limits, play quick play. It's fun.
Of course there are disadvantages but people already mentioned it, it's useless for me to mention it here.
Overwatch isn't just comp, there are more to it, it's fun i swear. Overwatch is my favorite game of all time, i haven't been obsessed with a game til this extent before/after overwatch. I love everything about it, i don't get why people complain about it and especially about blizzard, i just simply don't care and i'm here to enjoy the game, not fix it.