The answer to 'why do I have spider' is that spiders are common pests that can invade homes for a variety of reasons. Spiders are attracted to warm, dark, and quiet spaces where they can find food and build webs. They may enter your home through cracks, crevices, or open windows and doors in search of insects, moisture, or shelter.
Common signs of a spider infestation include seeing spiders crawling around, finding spider webs in corners or under furniture, and spotting egg sacs. While most spiders are harmless, some species like black widows and brown recluses can be dangerous and should be addressed promptly.