I get asked: "Why use Flask or Django? Why not write raw Python sockets?" It's a fair question. But in Python, frameworks provide necessary structure (WSGI/ASGI) that is painful to recreate.
1. The Dependency Trap
When you `pip install` a massive framework, you are signing a contract. However, in Python, stability is key. Django and Flask have maintained backward compatibility for years.
2. Performance Overhead
Let's look at a simple router. In Flask, it's elegant:
# Simple, fast, secure routing in Flask
from flask import Flask
app = Flask(__name__)
@app.route('/')
def home():
return "Hello World"
This abstracts the complexity of WSGI while remaining performant.
Conclusion
For high-performance business logic, I prefer the control of Flask or the "batteries-included" safety of Django.