Without gutters, the water has nowhere to go but downward, right to the foundations. The accumulation of water around this area can cause very serious problems, such as water damage, cracks, deformations and possible flooding in the basement. The purpose of having gutters and downspouts is to prevent rain from spreading all over the place. Without them, heavy rains would flood everything outside the house uncontrollably.
That's not going to end well because unbridled water would cause soil erosion. In turn, it can be expected that the grass will be damaged, that it will accumulate in the garden and that the landscape will be muddy. The problem starts with excess water. Without gutters, too much water drains through the roof and falls to the floor all over the house.
Over time, excess water causes problems such as fascia rot, mold decay, soil erosion or foundation damage. When the materials that make up the house rot or wear out by water, they become an easier target for animals eager to break through and settle inside. It is likely that you have invested a lot of money and time in your gardens. If the water drainage system is not well built, or if it does not have it completely, the accumulation of water can be disastrous for flowers and shrubs.
Too much water in gardens can detract from the curb appeal and the value of your home.