Which are the main reasons for doing a PhD?
After completing the Master's degree, some students are really interested in contributing to specific field of Science. Curiosity, challenges, and the feeling that they are able to contribute their ideas and knowledge to a much broader ecosystem, are the main reasons that motivate students towards the PhD journey.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Which are the main reasons for doing a PhD?
### Input: 
### Response: After completing the Master's degree, some students are really interested in contributing to specific field of Science. Curiosity, challenges, and the feeling that they are able to contribute their ideas and knowledge to a much broader ecosystem, are the main reasons that motivate students towards the PhD journey.