It's wonderful to go out and enjoy nature at all times, whether or not you know the names of the species you're looking at. But it's also important to learn the names, partly because that means you can help conservationists know how widespread a species is and so inform conservation action but also because it helps you to learn more about nature. One of the things that I love about nature in fact is that there is always something new to find out. I first became interested in hoverflies, for instance, a few years ago, when I happened to notice and photograph a species I'd never noticed before. Soon after that I began to notice the diversity of hoverflies around Edinburgh and joined the UK Hoverfly Facebook Group, which if you're interested in hoverflies is well worth joining if you're on Facebook.
There are around 250 species of hoverfly in the UK, which certainly gives you something new to learn every day through the warmer months!
Today I found this hoverfly along the John Muir Walkway near Musselburgh
Edited to add: I'm not suggesting that everyone should get involved in recording hoverflies, this is just the group of insects I've become interested in over the past few years. You may prefer wasps or bees or prefer not to look in detail at insects at all!
There's a great article here: Why I Obsess about the Names of Plants and Animals, well worth a read.