Why did we experience paranormal activity and then it all of a sudden stop?

When I first seen my boyfriend at the time (now husband) new house, i noticed that I didn’t feel right in the house/basement. I don’t know how to explain it. I thought it was because it was a new to me house and I just didn’t feel comfortable yet. Fast forward, I move it. I would tell my husband that I feel like I hear movement downstairs. The basement did not have a door so I felt like I could hear someone living down there constantly. Soft footsteps, things moving, etc. He would tell me that some pipes make noise and that I’m probably hearing that. I believed him. I deploy to the Middle East and now he is home alone. He then starts to hear things and jokingly tells me he heard footsteps in the basement and that I brought a ghost to the house. We laugh it off. A month later his friend gets a divorce and moves into the basement until he can get back on his feet. (I should add that the basement is half finished half not.) One night the friend said he was down in his room when he heard someone calling his name from upstairs. The friend walks upstairs and nobody is there. My husband was at work at the time. I eventually come back home and we immediately move into a house that we had built. Brand new house. IMMEDIATELY I feel something was off. I remember laying In bed, it’s about 3:30ish am, and I’m just on my phone waiting for my husband to get home any second. I heard him come up the stairs, walk down the hallway, walk into our room and just stand next to his side of the bed. I didn't look away from my phone but I asked “what are you doing?” After a few seconds I look at where his was standing and nobody was there. I heard someone walk from the bottom of the stairs all the way to me. I know for a fact that I did and I was so confident that I thought it was my husband and never second guessed while I heard the footstep. The last thing I remember happening was a tv in the spare room turning on by itself with very loud static. All of that happened in a two year span out of nowhere. It has been four years since and I haven’t noticed anything. Why would it start and stop like that? Multiple people experienced this and I don’t understand why or what it could have been.