Right now? Name me a franchise that is clearly more disastrous right now.
I heard the Browns. The only thing I can say to that is it really depends on what you think is harder to swallow... never winning, or repeatedly having your emotions on a seesaw?
In roughly the last decade, the Marlins dismantled three complete rosters via firesale, had eight managers, been at threat of relocation but nobody wanted the frugal cheapskate, and witnessed the death of a generational talent too soon and currently has no positive outlook.
And let's face it... fans here are so shitty and simultaneously the organization is so shitty to them. Fan confidence will never return. This team will continue to hemorrhage money and finish poorly until it is sold again and relocated.
I mean, there are numerous franchises out there sitting on championship droughts of 20-30+ years.
Two teams in your division haven't won in 30+ years (or ever). The Mets play in the biggest market in the country and have seen a team that was close to a World Series be decimated by injuries, with an ownership so broke because of one of the worst Ponzi schemes of all time that they refuse to spend more than a low middle market team on payroll. The Nationals are on a nice run, but, ya know, tell that to their fans in Montreal.
The Browns had their damn team move on them, come back, and be nothing short of awful. Meanwhile the franchise that used to be in Cleveland won two Super Bowls.
The Jets are the Jets.
The Knicks haven't won since 73 and have been an utter diaster since 99.
The Indians are still waiting for that championship they thought they had when your team snatched it away.
The 76ers have a great future but had to go through years of sheer awfulness to get to this point (and their #1 draft pick is on the DL with mental problems while the guy drafted with the pick they trades away is a rookie of the year candidate).
The Eagles have never won a title, have a team that looks killer, and just had their young stud quarterback have his knee blown out.
This is just the northeast.
The Marlins aren't even the least successful franchise in Miami.
The Marlins have won two titles in the last 20 years. They don't get to be the worst at anything.