These are my Mizuno Enerzy. They are only a few years old, but they survived my 110kg to 75kg, 5km in 50 mins to 10km in 55 mins fitness journey. Its getting a bit embarrasing at the gym when people see the duct tape. Ive already stitched the holes up three times.
How long are running shoes supposed to last you? They are expensive! Are they expected to do this, or should they last much longer?
Generally [source? I've heard it] it's recommended to change them every 600km to 1000km. The issue is not only the upper fabric but the state of the soles, that tend to lose grip and shock absorption and that makes you prone to injuries. But it depends on so many factors (weight, where you run, shape of your foot...)
That being said, the feeling you get using them should really tell you if they need to be changed. If you feel like hitting bricks when you run and your knees feel sore, maybe look for another pair.
I'm sure people at the gym are quite happy to see a dedicated person. Nobody gives a fuck about the state of your shoes, aesthetically speaking.
Well they are getting a bit thin at the front. Plenty of cushion left towards the heel though.