Dreams can often be a reflection of our thoughts, feelings, and experiences. In your dream, several elements stand out that may hold significance:

1. Haunted House: The modern house you rented being haunted could symbolize feelings of discomfort or unease in your current life situation. It might suggest that you are not fully comfortable or at peace with where you are right now.
2. Transportation (Horse/Donkey): Riding a small horse or donkey might indicate a desire for freedom or the need to escape from a situation that feels constraining. The choice of animal could also represent your resourcefulness in navigating challenges.
3. Conflict with the Driver: The encounter with the man in the white truck could symbolize external obstacles or conflicts in your life. His aggression might represent a person or situation that you feel is blocking your path or creating tension.
4. Return to the Old House: Wanting to return to your old house, where family was gathered, suggests a longing for comfort, familiarity, and connection with your roots. It may indicate a desire for safety and support from loved ones, especially in times of uncertainty.
5. Bathroom Scene: The bathroom and the incident with the poop could symbolize feelings of vulnerability and embarrassment. This part of the dream might reflect concerns about personal issues or feelings of losing control. The unexpected sweetness of the poop could indicate that you are trying to find something positive or valuable in a situation that feels negative.

Overall, your dream may reveal a mix of feelings regarding your current living situation, a desire for connection with family, and the challenges you're facing. It might be helpful to reflect on what aspects of your life feel 'haunted' or uncomfortable and consider how you can address those feelings. If you're feeling overwhelmed, reaching out to loved ones for support could provide comfort.