A vine or climber plant may use rock exposures, other plants, or other supports for growth rather than investing energy in a lot of supportive tissue, enabling the plant to reach sunlight with a minimum investment of energy.
This has been a highly-successful growth form for plants.
We can use the tendency of climbing plants to grow quickly.
Climbers can be trained over walls, pergolas, fences etc.
Climbers can be grown over other plants to provide additional attraction.
Artificial support can also be provided.