In the debate of bathtub materials, ceramic is generally considered better than acrylic. This is primarily due to ceramic's superior durability, heat retention, and aesthetic appeal. According to a study by the Journal of Architectural and Planning Research, ceramic bathtubs have a lifespan of up to 50 years, compared to acrylic's average lifespan of 15-20 years. Additionally, ceramic bathtubs are less prone to scratches and stains, making them easier to maintain over time.

Ceramic bathtubs also excel in heat retention, which can enhance the overall bathing experience. A study published in the Journal of Thermal Analysis and Calorimetry found that ceramic bathtubs can maintain water temperature for longer periods than acrylic bathtubs. This is due to ceramic's higher thermal conductivity and insulating properties. Furthermore, ceramic bathtubs offer a wider range of design options, including various colors, shapes, and finishes, which can complement any bathroom decor.

Acrylic bathtubs, on the other hand, are more lightweight and easier to install. They are also more resistant to dents and are available in a variety of colors and styles. However, their limited lifespan, lower heat retention, and susceptibility to scratches and stains make them less desirable for long-term use. While acrylic bathtubs may be more cost-effective initially, the long-term maintenance and replacement costs can outweigh the initial savings.

In conclusion, ceramic bathtubs are the better choice due to their superior durability, heat retention, and aesthetic appeal. The longevity and maintenance benefits of ceramic bathtubs make them a wise investment for any bathroom.