In a rush, but I'll just say that I think you're looking at the whole "money spent on lobbying" thing the wrong way around. They spend that much
because the EU is considerably harder to lobby than the UK government to get the results. Convincing 27 countries to agree to a thing is a lot harder than convincing a handful of Ministers and their Chief Whip.
You say our leaders can't change, and we should "advance in technology and culture". But technology benefits immensely from EU membership, hence why so many of the businesses and business leaders and researchers and academics are pro-remain. We stand a better chance of advancing in terms of science and technology as a part of the EU than outside of it.
As for culture, meh. Culture changes, culture grows, culture adapts, culture isn't a "thing" you can point at and preserve or fix. It is a fluid mess, and obsessing about preserving it (for example) is a fools errand as far as I'm concerned. Our culture is not our parents is not our grandparents is not our great-grandparents will not be our childrens will not be our grandchildrens, it's not worth the time to "improve" or "preserve" as a thing in and of itself, it's something that just happens. Social issues are what need focusing on, culture will follow suit and adapts and change as it always has and always will.
Personally I don't think the EU is progressing to becoming a full state ala the USA. I consider that a shame, personally, since I'm actually in favour of humanity progressing towards a one-world government, but that's just me. And I think a United State of Europe (to quote Churchill) could be a positive step forward towards that. There are factions inside the EU that want to take it that way, sure. But there are factions that want Wales to become independent from the UK. Doesn't make it particularly likely anytime soon
As for cheese, personally I like Goats Cheese on spicy pizzas. The Goats Cheese tames the spice down but keeps and brings out the flavour
(...okay, I wrote a lot for being in a rush xD)