Three words: Because you want it.
Wait, that's four words. Okay, let's try this again...
Three words: Cost per wear (ah, that's better).
If you pay $10 for a t-shirt, but after 5 wears it doesn't hug your arms and fit your body well like the first time you wore it, then you basically paid $2 per wear. If you pay $300 for a shirt, and it fits the same way after 10 years as it did when you first got it (assuming you wore it once a week), that's 57 cents per wear.
In other words, you spend in the short term but save in the long term.
I always have interesting conversations about people in the difference between paying for quality vs fast fashion convenience. I don't see anything wrong with fast fashion - in fact, I love it because it is fashion. What is wrong, is complaining about the difference in price without doing your own research, or taking the time to logically think about what you're paying for in two different scenarios.
Derwin "DJ" Hargrave is a menswear enthusiast whose career began in high school after discovering his passion for helping men dress better. Since then he has made men's style simple for thousands of men in person and over the internet. You can follow him on Instagram and Snapchat @djhargrave