I'm pretty new to this, and after researching a bit, I feel like ETH is going places and has far fewer barriers to expansion that BTC. I want to buy and hold some coins, and as of now i'm leaning towards ETH. but I can't ignore the fact that bitcoin seems like top dog still... so convince me to buy BTC instead of eth. Give a reason besides "first movers advantage" 
If there is need of convincing you to invest in bitcoin then according to me you know nothing of this crypto pioneer and its benefits.You must do some research on Google and read articles on this forum and you will immediately understand that investing in btc is much more profitable than investing in any alts. The pumps are not normal but huge surge are there when market is bearish and most people prefer this currency so market in the future will be great with increased market capitalisation. So its better to invest in it. Otherwise ETH has great potential with great utilties and bright future. So you can invest in both the currency by dividing your funds.