Leather is sturdy; it can be difficult to rip or tear and cats tend to avoid clawing it. Cleaning and conditioning, according to the manufacturer's instructions, are critical to the longevity of a leather sofa, and if followed the furniture should last 10 to 15 years or more. Leather will not hold pollen or dust, making it suitable for allergy-sufferers. Because it has natural elasticity, leather furniture is comfortable and the surface will become softer with age.
Leather is expensive and as the demand for leather furniture increases, so does the price. Many poor quality leather sofas are sold as high quality to unsuspecting consumers. Bare skin sticks to leather and the surface temperature will stay close to the temperature of the room, feeling cool against skin in winter and warm in summer. Accessories such as cushions and throws tend to slide off. Regular cleaning with special cleaners and conditioners is required to prevent cracking, discoloration and hardening. Repairing leather is difficult; due to dye lots it may be impossible to match colors.
Vinyl is much less expensive than leather, and a quality vinyl may be difficult to differentiate from leather. Vinyl is flame and abrasion resistant; it wears well. It is also highly resistant to UV rays; it will not fade in the sun as quickly as fabric or leather. Vinyl will not rot, and is easy to clean and maintain. Vinyl can be found that resembles a textured fabric, wicker, or leather and is available in just about any color.
Vinyl is a product of the chemical industry. Some of these chemicals off-gas, which can damage the fabric and cause health problems. Vinyl is susceptible to excess heat, and while it is flame resistant -- meaning it will not support a flame -- it is not heat resistant; a burning match or drop of candle wax can melt through the vinyl. Pin or needle marks will show on vinyl and it will not self-heal.