Loops are a double-edged sword as well (I am not a big fan of them). Music is about time, so even if you have say 10,000 loops/samples that average 5s each, you would spend 833+ hours just previewing them (let alone finding them again).
However, that being said, the crux of a song is often a nice riff, beat, loop, whatever; so there is no problem "thinking" in loops, but I have headed down the path to creating my own. There are so many tools/tricks available to capture ideas quickly, with a simple cell phone being a handy one. When an idea strikes, is simple to capture it quickly, then even use it in SONAR. Audio->MIDI conversion is a massive advantage... you can beat box (totally suck at doing so), and begin laying out a drum pattern from it. Same with even humming something... bass lines, riffs, etc.
The digital downside (for me) is that you can edit till the cows come home and not feel pressured to commit, so a lot of ideas can loiter in a sandbox state. This has been more of my challenge, but collaboration has upped my game a bit, as an old friend likes to send me ideas which I flesh out more quickly each time.
When it comes to loops, I find I can invest less time creating them myself than hunting for a "perfect" one, so I have spent more time focusing on learning how to manipulate the tools to make them (synths being the biggest challenge for me).