I use to listen to long songs but as I got older I began to appreciate shorter songs more. I rather listen to songs that are less than six minutes than songs that are long than six minutes.

Too long?:

I can't stand radio edits most of the time, so it wouldn't be bad to hear them songs long on the radio!!! yeah!!!

Someone said some of my songs are awesome but too long. So I got to thinking, "What? That doesn't even make sense"

If you're devoting any amount of time to listening to music that you enjoy, where would track length even come in to play? I have terrible attention too but it doesn't matter if I'm really digging what I'meh listening to. If you turn off a song strictly because it was "too long" then I've reason to believe you're not really into it.
What are you doing, watching the time to see how much has passed?

Close to the Edge by Yes at 18+ minutes is pure rapture.

A simple 3 chord rock song at 18+ minutes would be torture.

4'33 at 18+ minutes would make me wanna kill a bunch of people. Unless I was trying to fall asleep at the time. In which case, it would be awesome.

So..... you're not into it, exactly like what I said? If you don't like it, you really shouldn't be listening to it. That cancels out the "too long" sentiment. "Its too long amd lm not digging it". Well then it doesn't matter how long it is because you don't like it and don't wanna Liste. No one's saying "This is amazing and I'm loving every second of it but its too long so I have to turn it off".

Like I said, if you've decided to put something on that you love and that holds your attention, what does length have to do with anything? What, are you watching the time to see how much has passed?

Dude that's my point. Some long songs can hold my attention. Some can't because they wear out their welcome after a while.

I have a tons of songs I love that are 15+ minutes long. Hell, Bridge Across Forever by Transatlantic has one song at about 27 minutes and another at 30 minutes and I love them both.

Some songs are meant to be around 3:00. Look at The Beatles catalog for cripes sake. Taxman is only 2:39 and it's perfect. If they'd decided to keep it going for another 5 minutes it would have killed the song for me.

Sometimes stuff sounds cool for a few minutes but not for thirty minutes

On mainstream radio, i.e. Radio 1 or 2 or the endless loops they play on commercial stations should be curtailed at perhaps under six minutes. Hotel California or BoRap length. Music for the casual listener.
On 'adult' stations such as BBC6 Music there is more freedom to play 10-minute plus classics as the listeners are usually more discernible to interesting music.

There's no "too long" for me, but I probably won't be listening to something exceptionally long very often, since I just wouldn't have the time for it.