If becoming a team leader meant longer hours, more responsibilities and not a big difference in salary, would you choose to be a team leader?

There as to some motivation to perform the work. It would be satisfaction through work, through appreciation by seniors or team members, through money, through achievement of some goals. So it depends upon individual approach. If u get any of these you can still go to that position.

Besides the fact that money is a soul motivator to the majority of the workforce, extrinsic factors also play a vital role in employee satisfaction. I would any day choose a Team leader role as the amount of learning, owning up the responsibilities, Achieving goals, the power the sense of fulfilment and satisfaction, MONEY can't buy it. 

Elevation of responsibility would mean that one must focus more tasks and ensure the completion of the same. It may mean that one should manage his time well and sometimes the tasks would need extra hours of work. 

Having longer hours, more responsibility and a nominal salary increase as per the norms of the Organisation should not deter anyone from becoming a team leader. Some experience and learning in one's career cannot be equated to MONEY benefits at all. Remember that this is a path of growth and if one wants to succeed eventually, one has to take up the challenges irrespective of the the aspects mentioned. 

You will be a winner at the end.

Yes because of learn more from a member 

leader know every thing about any project so who do any work they must to tell team leader

so team leader is a great job