Does it really make sense to blow the engine right through every once in a while?

Hello. Since driving is becoming more and more popular and I can’t avoid the trend for financial reasons, I asked myself if it is healthy for the car, if you always only shrug relatively low-touring through the area? I had a test drive at a car house a year ago in a retired car (so advertised) with a 145 hp engine that felt like 90. The engines rusted at some point if you don’t give a little gas in between. d scares once a week with vmax over the AB?# Greeting sumerum