For average desktop user this information has no value at all.
However if you run Linux based server for your business or you are part of Linux support team, you should always aware of various limitations such as maximum file / parition size, maximum RAM or CPU limitations etc.
Maximum process or threads for Linux kernel 2.6
- Maximum number of threads: 32000
- Maximum number of threaded processes: 32000
- Maximum number of processes: 32000
For more information please read official Linux kernel documentation and source code.