It is difficult to provide a definitive answer to this question without additional context, as the motivations of fictional characters can be complex and multifaceted. However, there are a few possible reasons why Tom might want to take the last ski back to the lodge using the lift:
1. Convenience: Tom may find it more convenient to use the lift rather than skiing back to the lodge, especially if he is tired or if the ski back is difficult.
2. Safety: Tom may believe that it is safer to use the lift rather than skiing back to the lodge, especially if the ski back is dark, icy, or otherwise treacherous.
3. Time: Tom may be concerned about getting back to the lodge in time for a scheduled activity, such as dinner or a social event, and believe that using the lift will be faster than skiing back.
4. Equipment: Tom may have bulky or heavy equipment that makes skiing back to the lodge difficult, and he may believe that using the lift will be easier and more efficient.
These are just a few possible reasons why Tom might want to use the lift to take the last ski back to the lodge. Ultimately, the reason will depend on the specific context and the motivations of the character as determined by the author or creator of the fictional work.