Is it normal to be disturbed about how pathetic my parents' lives are?

So this is the situation. I am the youngest of 4 siblings. My parents basically spent all their lives raising us. They just worked and stayed home this whole time. Now they are retired and they literally stay home the whole day. They have almost no friends, they only meet with a few relatives every now and then. They have absolutely no interest in any type of art, they watch no movies, listen to any kind of music, go to theater or anything. They have never been outside my home city and they don't want to travel anywhere. Quite honestly, it is just as if their lives had no meaning.

The problem is this, my parents' entire lives revolve around what I do in some way. They just don't leave me alone. I am 25 years old, but they call me every single day just to know what I have done during the day. They want to know everything about my life and they HAVE to meet every single one of my friends and people I date. Every conversation with them feels like an interrogatory. I constantly feel overwhelmed by them and always try to nicely push them back, but they always get overly dramatic over this. Literally, every time I tell my parents that I want to have my space, they start crying.

My siblings are all still living in my house and doing nothing the whole day. Me in particular, I grew up being kind of independent and willing to pursue higher goals in life. I was never close to my family and I always undertook activities that would force me to be away from them (studying abroad, internships, moving out to other cities, etc). And I want to keep doing all these things, but my parents just keep emotionally blackmailing me. Sometimes they even offer me a lot of money just so that I will move back with them.

And well, I do feel kind of sad about my parents and just wish that they would do something with their lives besides waiting to die. But on the other hand, I just can't stand spending any other second around them. I really try not to hate them, but I start feeling more and more resentful towards them every single day. Quite honestly, I just want them to have their lives and for me to have mine... and just have a mature parent-son relationship finally.

So... what are your thoughts about this people?